The ones who are crazy enough to think they can change the world are the ones who do.- Steve Jobs
C Error Handling
In C programming, the error may occurred while writing into a file or reading from a file.
ferror() - Error Handling
The ferror() function is used detect error while reading or writing a file.
C program - ferror()
Lets try to code using ferror() and have some fun.
ferror.c
#include <stdio.h>
int main()
{
char ch[100];
FILE *fptr; //File pointer declaration
fptr = fopen("info.txt", "w "); //the function fopen opens the text file
fputs("This function is used to change the position of file pointer", fptr);
fseek(fptr, 5, 0);
fgets(ch, 50, fptr);
if(ferror(fptr))
printf("\nError:Reading a file is not allowed in write mode. ");
fclose(fptr); //the function closes the opened file
return 0;
}
- Error:Reading file not allowed.
Note:
The ferror function used to find out the errors during writing and reading a file.
perror() - Error Handling
The perror() function is used to display errors which are specified by compilers.
C program - perror()
Lets try to code using perror() and have some fun.
perror.c
#include <stdio.h>
int main()
{
char ch[100];
FILE *fptr; //File pointer declaration
fptr = fopen("info1.txt", "r "); //the function fopen opens the text file
if(fptr == NULL)
{
perror("folk text file ");
}
fclose(fptr); //the function closes the opened file
return 0;
}
- folk text file:No such file or directory
Related to Error Handling
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