The Strspn ()() Function in C

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

Declaring the Function Strspn ()() in C

Here is the declaration for strspn () in C:

 size_t strspn ( const char * str1 , const char * str2 ) 

Parameters

Str1 - Chain to be scanned.

Str2 - String containing characters to match in str1.

Returns the Value

This function returns the number of characters in the string segment of the original str1 string, but only the characters in str2.

For Example

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

 #include #include int main () { int len ; const char str1 [] = "ABCDEFG019874" ; const char str2 [] = "ABCD" ; len = strspn ( str1 , str2 ); printf ( "Do dai cua chuoi ket noi dau tien la = %dn" , len ); return ( 0 ); } 

Compiling and running the above C program will result:

According to Tutorialspoint

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