我在main函数里面定义的FILE *fp 然后传递给子函数 ,最后在main函数里用fclose(fp)就会强制停止,请问怎么回事。
#include <stdio.h>
#include <stdlib.h>
void readwrite(FILE *fp);
void formatASCII(FILE *fp);
int main()
{
FILE *fp;
readwrite(fp);
formatASCII(fp);
//fclose(fp); 就是这里会出错
return 0;
}
void formatASCII(FILE *fp)
{
int i = 2;
float f = 3.14;
fp = fopen("a1.txt", "a");
if (fp == NULL)
{
printf("cannot open the file\n");
}
fprintf(fp, "%d, %6.2f", i, f);
fscanf(fp, "%d, %6.2f", &i, &f);
printf("%d, %6.2f", i, f);
fclose(fp); //不能在main函数那里进行关闭,然后写到这里就可以了
}