您好，那我应该怎么才能知道我要搜索的这个字符串相对文件的地址呢

下面是我自己写的一点代码，我想输出文件指针当前所在的位置，不过输出的pos一直是0。。。


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

int main() {
    FILE* fp;
    fp5 = fopen("output","r" );
    //int* s;
    int* a;
    if ((a = (int*)calloc(100, sizeof(int))) == NULL) {
        printf("\n Error: failed in Calloc filegname");
        exit(69);
    }
    char* p;
    if ((p = (char*)calloc(1024, sizeof(char))) == NULL) {
        printf("\n Error: failed in Calloc filegname");
        exit(69);
    }
    char buffer[1024];
    //char* aaa = "hello";
    char* aaa = "groupr...";
    int pos;
    while (fgets(buffer, 1024, fp5)) {
        char* p = strstr( buffer,aaa);
        if (p != NULL) {
            fseek(fp5, 0, SEEK_CUR);
            pos = ftell(fp5);
            printf("%d", pos);
            printf("%s", p);
            break;
        }
    //printf("%s", p);
    }
}

[此贴子已经被作者于2017-10-28 13:50编辑过]