Question

Write a program in C to check whether two given strings are an anagram. From the following prototype, statement create a function that determines whether two strings are anagrams.

Test Data:

Input the first String: spare

Input the second String: pears

Expected output:

spare and pears are an anagram

updated

Answer 1

C code

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#include <stdio.h>

int checkAnagram(char [], char []);
int main()
{
   char s1[100],s2[100];
   int k;
   printf("Input the first String: ");
   scanf("%s",s1);
   printf("Input the second String: ");
   scanf("%s",s2);
   k=checkAnagram(s1,s2);
   if(k==1)
   printf("%s and %s are an anagram\n",s1,s2);
   else
   printf("%s and %s are not anagram\n",s1,s2);
  
   return 0;
}

int checkAnagram(char a[], char b[])
{
   int first[26] = {0}, second[26] = {0}, i = 0;

// Calculating frequency of characters of first string
while (a[i] != '\0')
{
first[a[i] - 'a']++;
i++;
}
i = 0;
// Calculating frequency of characters of second string
while (b[i] != '\0')
{
second[b[i] -'a']++;
i++;
}
  
// Comparing frequency of characters
for (i = 0; i < 26; i++)
{
if (first[i] != second[i])
return 0;
}
return 1;
}

============================================================================================

Output