Memcmp() and memicmp() compares first n bytes of two blocks of memory.
memcmp() performs comparison as unsigned characters.
memicmp() performs comparison as characters but, ignore upper case or lower case letters.
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Both functions return an integer value.
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Two memory buffers are equal (returns 0).
First buffer is greater than second (returns >0).
First buffer is less than second(returns
Program
The following program shows the usage of memcmp() and memicmp() functions.
#include#include main(){ char st1[]="This is C Programming language"; char st2[]="this is c programming"; int result; result=memcmp(st1,st2,strlen(st2)); printf(" 1. result after comparing buffer using memcmp"); check(result); result=memicmp(st1,st2,strlen(st2)); printf("
2. result after comparing buffer using memicmp"); check(result); } check(int x){ if(x==0) printf(" buffer st1 and st2 hold same data
"); if(x>0) printf("buffer st1 is bigger than buffer st2
"); if(x<0) printf(“ buffer st1 is less than buffer st2
"); }
输出
你将看到以下输出 −
1. result after comparing buffer using memcmp buffer st1 is less than buffer st2 2. result after comparing buffer using memicmp buffer st1 and st2 hold same data
