C语言模拟加载及获取可执行文件目录

#include<stdio.h>#include<stdlib.h>int main(int argc,char **argv){        int i = 0;    char* chs[4] = {"|","/","—","\\"};    // 模拟加载效果    while(i<5){                int index = i%4;        printf("  loading, please wait...   %s\r",chs[index]);        fflush(stdout);        usleep(200000);//200毫秒        i++;    }    printf("loading, please wait...    %s\n","ok");    fflush(stdout);    //clrscr();    //system("clear");    //sleep(1);    fprintf(stdout,"Hello,Linux.\n");    fflush(stdout);    sleep(1);    // 可执行脚本目录    int res = system("$(dirname argv[0])/test");    printf("test return %d.\n",res);    exit(0);}