. () Implement a robust version of the C library functionstrspn(): Name: size t strspn(const char *s, const char*accept);
Description: The strspn() function calculates the length of theinitial segment of s which consists entirely of characters inaccept. Return Value: The strspn() function returns the number ofcharacters in the initial segment of s which consist only ofcharacters from accept, or −1 if it is unable to complete its task.Write robust code (even though the library version is fragile).That is, return −1 on failure, but do not crash. Think before youwrite anything.
size t strspn(const char *s, const char *accept){
Answer
#include<stdio.h>
// Function to
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