C Exercises: Count the frequency of each element of an array
C Array: Exercise-8 with Solution
Write a program in C to count the frequency of each element of an array.
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
void main()
{
int arr1[100], fr1[100];
int n, i, j, ctr;
printf("\n\nCount frequency of each element of an array:\n");
printf("------------------------------------------------\n");
printf("Input the number of elements to be stored in the array :");
scanf("%d",&n);
printf("Input %d elements in the array :\n",n);
for(i=0;i<n;i++)
{
printf("element - %d : ",i);
scanf("%d",&arr1[i]);
fr1[i] = -1;
}
for(i=0; i<n; i++)
{
ctr = 1;
for(j=i+1; j<n; j++)
{
if(arr1[i]==arr1[j])
{
ctr++;
fr1[j] = 0;
}
}
if(fr1[i]!=0)
{
fr1[i] = ctr;
}
}
printf("\nThe frequency of all elements of array : \n");
for(i=0; i<n; i++)
{
if(fr1[i]!=0)
{
printf("%d occurs %d times\n", arr1[i], fr1[i]);
}
}
}
Sample Output:
Count frequency of each element of an array: ------------------------------------------------ Input the number of elements to be stored in the array :3 Input 3 elements in the array : element - 0 : 25 element - 1 : 12 element - 2 : 43 The frequency of all elements of array : 25 occurs 1 times 12 occurs 1 times 43 occurs 1 times
Flowchart:

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C Programming: Tips of the Day
C Programming - What is the argument for printf that formats a long?
Put an l (lowercased letter L) directly before the specifier.
unsigned long n; long m; printf("%lu %ld", n, m);
Ref : https://bit.ly/3dIwfkP
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