bcmp

  原型：extern int bcmp(const void *s1, const void *s2, int n);
  
  用法：#include 
  
  功能：比较字符串s1和s2的前n个字节是否相等
  
  说明：如果s1=s2或n=0则返回零，否则返回非零值。bcmp不检查NULL。
  
  举例：

      // bcmp.c
      
      #include 
      #include 

      main()
      {
        char *s1="Golden Global View";
        char *s2="Golden global view";;
        
        clrscr();        // clear screen
        if(!bcmp(s1,s2,7))
          printf("s1 equal to s2 in first 7 bytes");
        else
          printf("s1 not equal to s2 in first 7 bytes");

        getchar();
        clrscr();
        if(!bcmp(s1,s2,12))
          printf("s1 equal to s2 in first 12 bytes");
        else
          printf("s1 not equal to s2 in first 12 bytes");

        getchar();
        return 0;
      }