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Check whether two Strings are Anagram of each other - C, C++ Code

Write a C, C++ program to check whether two strings are anagram of each other.  Before solving this problem, let's first understand what is anagram.

What is Anagram

Two strings are said to be anagram, If both strings contain same characters, only the order of characters can be different.

For example -

i) "raj" and "jar" are anagram of each other.

ii) "abcde" and "dbaec" are anagram of each other.

Programming questions on strings

How to Check whether two Strings are Anagram of each other

Method 1

Use sorting to sort both the strings and then compare. If both the strings are same then it's a anagram

Quicksort program in C, C++

Sorting algorithm and their time complexity

Method 2

Create hash and compare.

Anagram Program in C

#include <stdio.h>
#include <string.h>

/* Check if both strings are anagrams */

int isAnagram(char str1[], char str2[]) {
      /* Default value assigned to zero */

      char str[256] = { 0 };
      /* Increment character count based on first string */

      for (int i = 0; i < strlen(str1); i++ ) {
      /* Decrement character count based on second string */

      for (int j = 0; j < strlen(str2); j++ ) {
        /* If both strings are anagrams 
           then net character count is zero */

      for (int k = 0; k < 256; k++ ) {

           if (str[k] != 0) {
               return 0;
      return 1;

int main(void) {

   char str1[100], str2[100];
   printf("\n Enter first string");
   printf("\n Enter second string");
   if (isAnagram(str1, str2)) {
      printf ("\n Enter strings are anagrams");
   } else {
     printf ("\n Enter strings are not anagrams");
   return 0;

Output :

Enter first string  :  raj

Enter second string : jar

Enter strings are anagrams

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