The Strerror ()() Function in C

This guide covers the strerror ()() function in c with practical context and easy-to-follow details. Use it to understand the subject and apply the information confidently.

Declaring Strerror ()() Function in C

Here is the declaration for strerror () in C:

 char * strerror ( int errnum ) 

Parameters

Errnum - Usually Errno , describes the error number.

Returns the Value

This function returns a pointer to the error string describing errnum error.

For Example

The following C program illustrates the usage of strerror () in C:

 #include #include #include int main () { FILE * fp ; fp = fopen ( "thuvienc.txt" , "r" ); if ( fp == NULL ) { printf ( "Error: %sn" , strerror ( errno )); } return ( 0 ); } 

Compiling the C program will result (because we open a file that does not exist):

According to Tutorialspoint

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