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#include <iostream>
using namespace std;
 
int count(char* str,char chr)
{
	if (*str==0)
		return 0;
	if(*str==chr)
		return 1+count(str+1,chr);
	else
		return 0+count(str+1,chr);
}
int main() {
	str a='12345';
	chr b='1';
	cout<<count(a,b);
	// your code goes here
	return 0;
}

prog.cpp:14:8: warning: character constant too long for its type
  str a='12345';
        ^
prog.cpp: In function 'int main()':
prog.cpp:14:2: error: 'str' was not declared in this scope
  str a='12345';
  ^
prog.cpp:15:2: error: 'chr' was not declared in this scope
  chr b='1';
  ^
prog.cpp:16:14: error: 'a' was not declared in this scope
  cout<<count(a,b);
              ^
prog.cpp:16:16: error: 'b' was not declared in this scope
  cout<<count(a,b);
                ^

Standard output is empty