C Program to find Frequency of characters in a String

By | 08.11.2016

Frequency of characters in a String


Write a C Program to find Frequency of characters in a String. Here’s simple C Program to find Frequency of characters in a String in C Programming Language.


C – Strings : 


Strings are actually one-dimensional array of characters terminated by a null character ‘\0’. Thus a null-terminated string contains the characters that comprise the string followed by a null.

String is a sequence of characters. char data type is used to represent one single character in C. So if you want to use a string in your program then you can use an array of characters.

The declaration and definition of the string using an array of chars is similar to declaration and definition of an array of any other data type.

Any string ends with a terminating null character ‘\0’. An array definition in such a way should include null character ‘\0’ as the last element.


Here is source code of the C Program to find Frequency of characters in a String. The C program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.


SOURCE CODE : :


/*  C Program to find Frequency of characters in a String  */

#include<stdio.h>
#include<conio.h>

 void main()
 {
   int i,count=0;
   char ch[20],c;
   clrscr();
   printf("Enter Any String: ");
   gets(ch);
   printf("Enter any Character form string: ");
   scanf("%c",&c);
   for(i=0;ch[i]!='\0';i++)
   {
   if(ch[i]==c)
   count++;
   }
   if(count==0)
   {
   printf("Given character not found");
   }
   else
   {
   printf("Repetition of %c is %d times",c,count);
   }
   getch();
 }

Output:


/*  C Program to find Frequency of characters in a String  */

Enter Any String :: www.codezclub.com

Enter any Character :: c

Frequency of [ c ] is [ 3 ] times.

Process returned 0

Above is the source code for C Program to find Frequency of characters in a String which is successfully compiled and run on Windows System.The Output of the program is shown above .

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About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

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Ishu Sharma

every time error comes”Given character not found”
when I write any character from string on output page