C program to String Compare Ignore Case - STRICMP

Below is C program to String Compare Ignore Case - STRICMP.

Program:

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/* STRING COMPARE IGNORE CASE - STRICMP */   #include<stdio.h>   int main() {  char str1[100], str2[100];  int i, d=0, flag=0;  char x,y;  printf("Please enter first string: ");  // gets(str1);  // fgets is a better option over gets to read multiword string .  fgets(str1, 100, stdin);  // Following can be added for extra precaution for '\n' character  // if(str1[length(str1)-1] == '\n') str1[strlen(str1)-1]=NULL;    printf("Please enter second string: ");  // gets(str2);  fgets(str2, 100, stdin);  // if(str2[length(str2)-1] == '\n') str2[strlen(str2)-1]=NULL;    for(i=0;str1[i]!=NULL&&str2[i]!=NULL;i++)  {   x=str1[i];   y=str2[i];   if(x>='a'&&x<='z')    x-=32;   if(y>='a'&&y<='z')    y-=32;   if(x!=y)   {    break;    flag=1;   }  }  if(flag=0)  {   x=str1[i];   y=str2[i];   if(x>='a'&&x<='z')    x-=32;   if(y>='a'&&y<='z')    y-=32;  }  d=x-y;     if(d==0)   printf("Strings are equal");  else   printf("Strings are not equal");    return 0; }