Question

please explain!!! thanks!!

Write a C program that asks the user to guess your favorite Florida city. The user can't exceed 4 trials. Sample Run 1: Guess my favorite Florida city: Orlando No! Try again: MiAmi No! Try again: Fort meyers That's the one! Note that if the user could have entered FORT MEYERS. That is: FORT MEYERS, FORT MeyeRS, fort MEYERs.. are all the same. Search if there are some predefined function to use in this context Sample Run 2: Guess my favorite Florida city: Orlando No! Try again: Tampa No! Try again: Fort Meyers No! Try again: Sarasota Sorry-my favorite Florida City is Kissimmee!

Answer 1

There's no builtin function which compares two strings in c ignoring their cases. So, i've written a custom function to do that for you.

Code:

#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
int compare(char *fav, char *ans)//this function returns 0 if two strings are same and 1 otherwise
{
   if(strlen(fav) != strlen(ans)) return 1;//if lengths aren't the same return 1
   int i;
   for(i=0;i<strlen(fav);i++)
   {
       if(toupper(fav[i]) != toupper(ans[i])) return 1;//for every character convert it into upper case and check if same, if they aren't same, return 1
   }
   return 0;//finished scanning the strings, no non-matching character appeared so return 0
}
int main()
{
   char fav[] = "Kissimmee";//stire your favourite city here
   int trial = 0;//count no of trials
   char *ans;ans = (char *)malloc(100*sizeof(char));//allocate memory for user input
   printf("Guess my favourite Florida city: ");
   fgets(ans, 99, stdin);//reads a line of input including spaces
   ans[strlen(ans)-1]='\0';//to avoid storing the newline character
   while(1)//run infinitely
   {
       trial++;//increment trial
       if(compare(fav,ans)==0)//if both are same
       {
           printf("That's the one!\n");
           break;
       }
       if(trial<4)//if trials haven't exceeded 4
       {
           printf("No! Try again: ");
           fgets(ans, 99, stdin);
           ans[strlen(ans)-1]='\0';
       }
       else//trials are more than 4
       {
           printf("Sorry-my favorite Florida City is %s!",fav);
           break;
       }
   }
   return 0;
}

Output:

Guess my favourite Florida city: Orlando No! Try again: MiAmi No ! Try again: Fort meyers That's the one! Process exited after 16.8 seconds with return value e Press any key to continue .

Guess my favourite Florida city: Orlando No! Try again: Tampa No! Try again: Fort meyers No! Try again: Sarasota Sorry-my favorite Florida City is Kissimmee! Process exited after 14.87 seconds with return value e Press any key to continue