The ferror() function is used to check for the file error on given stream. A return value of zero indicates no error has occurred, whereas a non-zero value indicates an error occurred.
Following is the syntax of the ferror() function:
#include<stdio.h> int ferror(FILE *stream);
Note : Use perror to determine the exact nature of error
The following c program aborts program execution if a file error occurs ( Let's assume that fp points to a stream that opened fro write operations ) :
while(!done)
{
putc(info, fp);
if(ferror(fp))
{
printf("File Error..!!\n");
printf("Press any key to exit..\n");
getch();
exit(1);
}
}