ferror : ferror « stdio.h « C Tutorial

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C Tutorial » stdio.h » ferror

22.4.1.ferror

Item	Value
Header	#include
Declaration	int ferror(FILE *stream);
Function	checks for a file error.
Return	0: no error has occurred. Nonzero: an error has occurred.

Use the perror() function to find out more about the error.

#include <stdio.h>

  #include <stdlib.h>



  int main(void){

     FILE *fp;



     if((fp=fopen("test", "rb"))==NULL) {

        printf("Cannot open file.\n");

        exit(1);

     }



     putc('C', fp);

     if(ferror(fp)) {

       printf("File Error\n");

       exit(1);

     }

    

     fclose(fp);

     return 0;

  }

22.4.ferror
	22.4.1.	ferror

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