#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
char str[60] = {0}, marks[6] = "12345";
//char* ptr = strpbrk(str, marks);
char chr[2] = {0};
int i = 0;
for(; chr[0] != ' '; ++i) {
}
str[i] = ':';
str[i+1] = ' ';
return 0;
}
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