#include <stdio.h>
#include<string.h>
#include <ctype.h>
int strcmpi(char* s1, char* s2){
int i;
if(strlen(s1)!=strlen(s2))
return -1;
for(i=0;i<strlen(s1);i++){
if(toupper(s1[i])!=toupper(s2[i]))
return s1[i]-s2[i];
}
return 0;
}
int main(){
char str1[30];
char str2[30];
printf("Enter string1: ");
fgets(str1,30,stdin);
printf("Enter string2: ");
fgets(str2,30,stdin);
if(strcmpi(str1,str2)==0)
printf("Both strings are same.\n");
else
printf("Both strings are not same.\n");
return 0;
}