#include stdio.h#include string.hint main () {int len;const char str1[] = ABCDEFG019874;

编程学习网为您整理以下代码实例，主要实现：C语言库strspn()函数，希望可以帮到各位朋友。

#include <stdio.h>
#include <string.h>

int main () {
   int len;
   const char str1[] = "ABCDEFG019874";
   const char str2[] = "ABCD";

   len = strspn(str1, str2);

   printf("Length of initial segment matching %d\n", len );

   return(0);
}