C Programming. Frequency of each element in an array.

 Frequency of each element in an array.

#include<stdio.h>

int main() {

    int a[10];

    int i, j, c=0;

   

    printf("Enter the elements of an array : \n");

    for (i=0; i<10; i++){

        scanf("%d",&a[i]);

    }

    for (i=0; i<10; i++){

        c=1;

        if (a[i]!=-1){

            for (j=i+1; j<10; j++){

                if(a[i]==a[j]){

                    c++;

                    a[j]=-1;

                }

            }

            printf("Frequency of %d is %d.\n",a[i],c);

        }

    }

    return 0;

}  

Output:-

Enter the elements of an array : 1 2 1 3 6 5 2 4 1 8 Frequency of 1 is 3. Frequency of 2 is 2. Frequency of 3 is 1. Frequency of 6 is 1. Frequency of 5 is 1. Frequency of 4 is 1. Frequency of 8 is 1.