C memcmp() Function
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C memcmp() Function
The memcmp() function compares the first n bytes of memory area str1 and memory area str2.
Example
C Compiler
#include <stdio.h>
#include <string.h>
int main()
{
char str1[] = "ABCD";
char str2[] = "abcd";
int res = memcmp(str1, str2, 3);
if(res == 0)
printf("str1 is equal to str2");
else if(res > 0)
printf("str1 is greater than str1");
else
printf("str1 is less than str2");
return 0;
}
Output
str1 is less than str2
Syntax
int memcmp(const void *str1, const void *str2, size_t n)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| str1 | Required | A block of memory. |
| str2 | Required | A block of memory. |
| n | Required | Number of bytes to be compared. |
Return Value
| Value | Explanation |
|---|---|
| +ive | If str1 is greater than str2 |
| 0 | If str1 is equal to str2 |
| -ive | If str1 is less than str2 |
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