c++ 文件读写 core dump

#include<iostream>#include<string.h>#include<cstdio>int main(){    char path[]="~/tmp.txt";    FILE* fp=fopen(path,"at");    fputs("success\n",fp);    fclose(fp);    std::cout<<"success"<<std::endl;    return 0;}

这段代码运行出错，因为c不能识别“~”，要补全绝对路径！！！