题解 | #比较字符串大小#

#include using namespace std;

int mystrcmp(const char* src, const char* dst);

int main() {

char s1[100] = { 0 };
char s2[100] = { 0 };

cin.getline(s1, sizeof(s1));
cin.getline(s2, sizeof(s2));

int ret = mystrcmp(s1, s2);

cout << ret << endl;

return 0;

}

int mystrcmp(const char* src, const char* dst) {

// write your code here......
int rt = 0;
while ((*src) != '\0' && (*dst) != '\0'){
    if(*src - *dst != 0){
        
        if( *src - *dst < 0 ) return -1;
        if( *src - *dst > 0 ) return 1;
    }
    src++;
    dst++;
}
if(*dst == '\0' && *src == '\0') {
    rt = 0;
}else if(*src == '\0' && *dst != '\0') {
    rt = -1;
}else {
    rt = 1;
}

return rt;

}