strcoll in C language

The C strcoll function is a String Function, used to compare two strings. The result of this function depends upon the LC_COLLATE settings. The strcoll method returns any of the following values:

• It will return -1 if str1 is less than str2
• It returns +1 if str1 is greater than str2
• and this function will return 0 if str1 and str2 are equal

C strcoll syntax

The basic syntax of the strcoll in C Programming language is as shown below.

char *strcoll(const char *str1, const char *str2);

or we can simply write it as:

strcoll(str1, str2);

strcoll in C language Example

The strcoll function used to compare two strings based on the location settings. This program will help you to understand the strcoll with multiple examples.

TIP: You have to include the #include<string.h> header before using this strcoll String Function.

/* C strcoll Function example  */

#include <stdio.h> 
#include<string.h>
 
int main()
{
   char str1[50] = "abcdef";
   char str2[50] = "abcdefgh";
   char str3[] =  "ghijk";
   char str4[] =  "GHIJK";
   int i, j, k;
	
   i = strcoll(str1, str2);		
   printf("\n The Comparison of str1 and str2 Strings = %d", i);
 	
   j = strcoll(str3, str4);		
   printf("\n The Comparison of str3 and str4 Strings = %d", j);
   
   k = strcoll(str1, "abcdef");		
   printf("\n The Comparison of both Strings = %d", k);
}

String strcoll Example 2

Instead of printing 0, 1, and -1 as the output, this C program will print a meaningful message using Else If Statement

/* C strcoll Function example  */

#include <stdio.h> 
#include<string.h>
 
int main()
{
   	char str1[50] = "abcdefgh";
   	char str2[50] = "ABCDEFGH";
   	int result;
	
   	result = strcoll(str1, str2);
   
   	if(result < 0)
   	{
   		printf("\n str1 is Less than str2");
	}
	else if(result > 0)
   	{
   		printf("\n str2 is Less than str1");
	}
	else
   	{
   		printf("\n str1 is Equal to str2");
	}
	return 0;
}

 str2 is Less than str1

strcoll Function Example 3

This C Program allows the user to enter two strings. Next, it is going to compare those two strings using strcoll function.

/* C strcoll Function example  */
 
#include <stdio.h> 
#include<string.h>
 
int main()
{
	char str1[100], str2[100];
	int result;
 
	printf("\n Please Enter First String  : ");
	gets(str1);	
	
	printf("\n Please Enter the String that you want to Compare : ");
	gets(str2);	
	
	result = strcoll(str1, str2);
	
 	if(result < 0)
   	{
   		printf("\n First String is Less than Second String");
	}
	else if(result > 0)
   	{
   		printf("\n Second String is Less than First String");
	}
	else
   	{
   		printf("\n First String is Equal to Second String");
	}
}

 Please Enter First String  : abcd

 Please Enter the String that you want to Compare : aBCD

 Second String is Less than First String