习题11-4 字符串的连接 (15 分)

#include <stdio.h>
#include <string.h>

#define MAXS 10

char *str_cat(char *s, char *t);

int main()
{
    char *p;
    char str1[MAXS + MAXS] = { '\0' }, str2[MAXS] = { '\0' };

    scanf("%s%s", str1, str2);
    p = str_cat(str1, str2);
    printf("%s\n%s\n", p, str1);

    system("pause");
    return 0;
}

/* 你的代码将被嵌在这里 */
char *str_cat(char *s, char *t) {
    int lens = strlen(s), lent = strlen(t);
    for (int i = 0; i < lent; i++)
        s[lens + i] = t[i];
    return s;
}