文件操作函数feof判断是否指向文件的结尾处，结尾即为空字符

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#include <STDIO.H>#include <conio.h>int main(){FILE *fStream = NULL;intiReturn = 1;char ch;fStream = fopen("d:\\wimrepairread.txt","r+");if (fStream != NULL){fseek(fStream,0,SEEK_SET);ch = fgetc(fStream);if (feof(fStream)){printf("It reaches the end\n");}else{printf("It doesn't reach the end\n");}//feof若当前文件指针已经移动到结尾，则返回非0。若未移动到结尾，返回0.//可以使用fgetc得到的值是否为EOF来替换。if (ch == EOF)//EOF是文本文件结束的标志。{printf("It reaches the end\n");}else{printf("It doesn't reach the end\n");}while(!feof(fStream)){ch = fgetc(fStream);printf("%c\n", ch); //当feof返回值为非0时，fgetc获得的值为空。}iReturn = 0;goto exit;}else{iReturn = 1;goto exit;}exit:if (fStream!=NULL){fclose(fStream);fStream = NULL;}return iReturn ;}

开始时，不要难过忘记：FILE *fStream = NULL;

结束之后，千万不要忘记以下这段代码：

exit:if (fStream!=NULL){fclose(fStream);fStream = NULL;}

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