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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() {
	char a='12345';
	char b='1';
	cout<<count(a,b);
	// your code goes here
	return 0;
}

prog.cpp:14:9: warning: character constant too long for its type
  char a='12345';
         ^
prog.cpp: In function 'int main()':
prog.cpp:14:9: warning: overflow in implicit constant conversion [-Woverflow]
prog.cpp:16:17: error: invalid conversion from 'char' to 'char*' [-fpermissive]
  cout<<count(a,b);
                 ^
prog.cpp:4:5: note: initializing argument 1 of 'int count(char*, char)'
 int count(char* str,char chr)
     ^

Standard output is empty