strspn Function

  • It returns the index of the first character in *str1 that does not match any of the characters in *str2 .


  • Syntax:

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

    Example:

    #include <string.h>
    
    #include <stdio.h>
    
      int main()
    
      {
    
        int len;
    
    
    
        len = strspn("this is a test", "hi");
    
        printf("%d", len);
    
    
    
        return 0;
    
      }
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