Function Strtoul ()() in C

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

Declaring the Function Strtoul ()() in C

Below is the declaration for strtoul () in C:

 unsigned long int strtoul ( const char * str , char ** endptr , int base ) 

Parameters

Str - This is a string representing an integer.

Endptr - This is a reference to a allocated object of type char *, whose value is set by the function to the next character in str after the numeric value.

Base - This is the base, must be 2, 8, ., 36, or special value 0.

Returns the Value

This function returns an integer that has been converted as a long int value. Otherwise, the function returns 0.

For Example

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

 #include #include int main () { char str [ 30 ] = "21.32301 Hoc C tai QTM" ; char * ptr ; long ret ; ret = strtoul ( str , & ptr , 10 ); printf ( "Phan gia tri (unsigned long int) la: %lun" , ret ); printf ( "Phan gia tri chuoi la |%s|" , ptr ); return ( 0 ); } 

Compile and run the above C program to see the results.

According to Tutorialspoint

Previous article: Function strtol () in C

Next lesson: Calloc () function in C