C语言 练习题

subString

#include <iostream>
int subString(char* sSeek, char* sKey) {
    char* p = sSeek;
    while(*p != '\0') {
        int flag = 1;
        char* pKey = sKey;
        char* pTarget = p;
        while((*pKey != '\0') && (*pTarget!='\0')) {
            if(*pKey != *pTarget) {
                flag = 0;
                break;
            }
            //---------------------------------------
            pKey++;
            pTarget++;
        }
        if(1 == flag) {
            puts(p);
            return (p-sSeek);
        }
        //---------------------------------------
        p++;
    }
    return -1;
}
int main(int argc, char** argv) {
    char* sKey="人民";
    char* sSeek="DVD人民的名义!";
    int ret = subString(sSeek, sKey);
    if(ret>-1) {
        printf("第%d个字符开始，有", ret);
    }

    return 0;
}