c语言 9-2

#include <stdio.h>

int main(void)
{
    char s[] = "ABC";
    printf("begin: %s\n", s);
    
    int i;
    for(i = 0; i < 4; i++)
    {
        s[i] = ‘\0‘;
    }
    
    printf("end: %s\n", s);
    
    return 0; 
}

#include <stdio.h>

int main(void)
{
    char s[] = "ABC";
    printf("begin: %s\n", s);
    
    s[0] = ‘\0‘;
    
    printf("end: %s\n", s);
    
    return 0;
}