C语言文件读写操作示例代码.txt
include
include
int main() {
FILE *fp;
char ch;
fp = fopen("file.txt", "r");
if (fp == NULL) {
printf("文件打开失败！\n");
exit(1);
}
while ((ch = fgetc(fp)) != EOF) {
putchar(ch);
}
fclose(fp);
fp = fopen("file.txt", "a");
if (fp == NULL) {
printf("文件打开失败！\n");
exit(1);
}
fprintf(fp, "\n这是追加的内容。\n");
fclose(fp);
return 0;
}