#include <stdlib.h>
#include <stdio.h>


void replace(char string[], char target, char replacement);

int main(int argc, char *argv[])
{
	char test[] = "test";
	printf("%s\n", test);
	replace(test, 'e', 'a');
	printf("%s\n", test);
	return 0;
}

void replace(char string[], char target, char replacement){
	int i = 0;
	while(string[i] != '\0'){
		if(string[i] == target){
			string[i] = replacement;
		}
		i++;
	}
}