strcmp.c

#include <stdio.h>
#define LENGTH 100
int my_strncmp(char s1[],char s2[],int n);// declaring prototype the main function

int main(void){
	int size;
	printf("Comparative up to which index?(Enter the value of n)");
	scanf("%d",&size);
	char string1[LENGTH];
	char string2[LENGTH];
	printf("Please enter the 1st and 2nd strings. The two strings must be of equal length.");
	scanf("%s %s",string1,string2);
	printf("%d",my_strncmp(string1,string2,size)); 
	return 0;
}
int my_strncmp(char s1[],char s2[],int n){

	for(int i=0;i<n;i++)
	{
		if(s1[i] == s2[i]){
			if(i==(n-1)) return 0; }//  if the ASCII values ​​of all characters of the two arrays are equal returns 0
		int a1 = (int) s1[i];
		int a2 = (int) s2[i];
		if(a1>a2) return 1; // if the ASCII value of the first character in string 1 is greater than string 2 returns 1.
		if(a2>a1) return -1;// if the ASCII value of the first character in string 2 is greater than string 1 returns -1.
	}
}