题解 | #字符串连接#

#include <stdio.h>

int main() {
    char s1[100], s2[100], res[200];
    while (scanf("%s %s", s1, s2) != EOF) { 
        int i = 0, top = 0;
        while (s1[i] != '\0') res[top++] = s1[i++];
        i = 0;
        while (s2[i] != '\0') res[top++] = s2[i++];
        res[top] = '\0';
        printf("%s", res);
    }
    return 0;
}