Frequency of Characters in a String using C Programming Language

C Programming Language String functions in C (Article) String functions in C (Program)

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Program:

#include<stdio.h>
#include<string.h>
int main()
{
int i, count = 0;
char arrayName[100], ch;

printf("Enter a string: ");
gets(arrayName);

printf("Enter a character to find its frequency: ");
scanf("%c", &ch);

 for(i = 0; arrayName[i] != '\0'; i++ )
 {
  if( ch == arrayName[i] )
    count++;
 }

 printf("Frequency of %c = %d", ch, count);
 return 0;
}

Output:

Enter a string: Rumman Ansari
Enter a character to find its frequency: m
Frequency of m = 2

Explanation:

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