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#include <iostream>
 
 
using namespace std;
 
 
int main()
 
{
 
int age,months;
 
 
cout << "Enter the age of person in years\n";
 
cin >> 24;
 
 
months = age * 12;
 
cout <<"The age of person in months = " << months << endl;
 
 
return 0;
 
}
 

prog.cpp: In function 'int main()':
prog.cpp:16:5: error: no match for 'operator>>' (operand types are 'std::istream {aka std::basic_istream<char>}' and 'int')
 cin >> 24;
     ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:120:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(__istream_type& (*__pf)(__istream_type&))
       ^
/usr/include/c++/5/istream:120:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid conversion from 'int' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}' [-fpermissive]
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:124:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>] <near match>
       operator>>(__ios_type& (*__pf)(__ios_type&))
       ^
/usr/include/c++/5/istream:124:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid conversion from 'int' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}' [-fpermissive]
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:131:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(ios_base& (*__pf)(ios_base&))
       ^
/usr/include/c++/5/istream:131:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid conversion from 'int' to 'std::ios_base& (*)(std::ios_base&)' [-fpermissive]
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:168:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(bool& __n)
       ^
/usr/include/c++/5/istream:168:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'bool&' from an rvalue of type 'bool'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:172:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>] <near match>
       operator>>(short& __n);
       ^
/usr/include/c++/5/istream:172:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'short int&' from an rvalue of type 'short int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:175:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned short& __n)
       ^
/usr/include/c++/5/istream:175:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'short unsigned int&' from an rvalue of type 'short unsigned int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:179:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>] <near match>
       operator>>(int& __n);
       ^
/usr/include/c++/5/istream:179:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'int&' from an rvalue of type 'int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:182:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned int& __n)
       ^
/usr/include/c++/5/istream:182:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'unsigned int&' from an rvalue of type 'unsigned int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:186:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(long& __n)
       ^
/usr/include/c++/5/istream:186:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'long int&' from an rvalue of type 'long int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:190:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned long& __n)
       ^
/usr/include/c++/5/istream:190:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'long unsigned int&' from an rvalue of type 'long unsigned int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:195:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(long long& __n)
       ^
/usr/include/c++/5/istream:195:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'long long int&' from an rvalue of type 'long long int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:199:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned long long& __n)
       ^
/usr/include/c++/5/istream:199:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'long long unsigned int&' from an rvalue of type 'long long unsigned int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:214:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(float& __f)
       ^
/usr/include/c++/5/istream:214:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'float&' from an rvalue of type 'float'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:218:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(double& __f)
       ^
/usr/include/c++/5/istream:218:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'double&' from an rvalue of type 'double'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:222:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(long double& __f)
       ^
/usr/include/c++/5/istream:222:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid initialization of non-const reference of type 'long double&' from an rvalue of type 'long double'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:235:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(void*& __p)
       ^
/usr/include/c++/5/istream:235:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid conversion from 'int' to 'void*' [-fpermissive]
 cin >> 24;
        ^
prog.cpp:16:8: error: cannot bind rvalue '24u' to 'void*&'
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:259:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>] <near match>
       operator>>(__streambuf_type* __sb);
       ^
/usr/include/c++/5/istream:259:7: note:   conversion of argument 1 would be ill-formed:
prog.cpp:16:8: error: invalid conversion from 'int' to 'std::basic_istream<char>::__streambuf_type* {aka std::basic_streambuf<char>*}' [-fpermissive]
 cin >> 24;
        ^
In file included from /usr/include/c++/5/string:53:0,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/5/bits/basic_string.tcc:1441:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/5/bits/basic_string.tcc:1441:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   mismatched types 'std::basic_string<_CharT, _Traits, _Alloc>' and 'int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/istream:934:0,
                 from /usr/include/c++/5/iostream:40,
                 from prog.cpp:1:
/usr/include/c++/5/bits/istream.tcc:955:5: note: candidate: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/5/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   mismatched types '_CharT2*' and 'int'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/istream:934:0,
                 from /usr/include/c++/5/iostream:40,
                 from prog.cpp:1:
/usr/include/c++/5/bits/istream.tcc:923:5: note: candidate: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/5/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   deduced conflicting types for parameter '_CharT' ('char' and 'int')
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:756:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/5/istream:756:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   cannot convert '24' (type 'int') to type 'unsigned char&'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:761:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/5/istream:761:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   cannot convert '24' (type 'int') to type 'signed char&'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:803:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/5/istream:803:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   cannot convert '24' (type 'int') to type 'unsigned char*'
 cin >> 24;
        ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from prog.cpp:1:
/usr/include/c++/5/istream:808:5: note: candidate: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/5/istream:808:5: note:   template argument deduction/substitution failed:
prog.cpp:16:8: note:   cannot convert '24' (type 'int') to type 'signed char*'
 cin >> 24;
        ^

Standard output is empty