Question

创建一个文件,若文件已存在则清空原内容的 c++程序

Answer 1

1.用remove函数功能:删除一个文件 用法:intremove(constchar*filename);头文件：在VisualC++6.0中可以用stdio.h返回值：如果删除成功，remove返回0，否则返回EOF（-1）。2.例：#include int main(){ if(remove("1.txt")) printf("Could not delete the file &s \n","1.txt"); else printf("OK \n");return 0;}1.txt在程序目录下

Answer 2

fstream默认就是这样的

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