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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     //char s1[100], s2[100], i, j;
  6. 	string s1="hello";
  7. 	string s2="world";
  8. 	s1=s1+s2;
  9.     //printf("Enter first string: ");
  10.     //scanf("%s", s1);
  11.  
  12.    // printf("Enter second string: ");
  13.     //scanf("%s", s2);
  14.  
  15.     // calculate the length of string s1
  16.     // and store it in i
  17.  /*   for(i = 0; s1[i] != '\0'; ++i);
  18.  
  19.     for(j = 0; s2[j] != '\0'; ++j, ++i)
  20.     {
  21.         s1[i] = s2[j];
  22.     }
  23.  
  24.     s1[i] = '\0';*/
  25.     //s1=s1+s2;
  26.     printf("After concatenation: %s", s1);
  27.  
  28.     return 0;
  29. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c:1:25: fatal error: bits/stdc++.h: No such file or directory
 #include <bits/stdc++.h>
                         ^
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/jA7LvU
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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