# C Program to Count Frequency of each Element in an Array

C program to count the frequency of each element in an array; Through this tutorial, we will learn how to count the frequency of each element in an array using standard method and function in c programs.

## Programs to Count Frequency of each Element in an Array in C

• C Program to Count Frequency of each Element in an Array using Standard Method
• C Program to Count Frequency of each Element in an Array using Function

### C Program to Count Frequency of each Element in an Array using Standard Method

```#include <stdio.h>

int main()
{
int a[10000],b[10000],i,j,n,c=0 ;

printf("Enter size of the array : ");
scanf("%d", &n);

printf("Enter elements in array : ");
for(i=0; i<n; i++)
{
scanf("%d",&a[i]);
}

for(i=0; i<n; i++)
{
c=1;
if(a[i]!=-1)
{
for(j=i+1; j<n; j++)

{
if(a[i]==a[j])
{
c++;
a[j]=-1;
}
}
b[i]=c;
}

}

for(i=0; i<n; i++)
{
if(a[i]!=-1)
{
printf("no of %d is %d \n",a[i],b[i]);

}

}
return 0;
}
```

The output of the above c program; as follows:

```Enter size of the array : 5
Enter elements in array : 5 2 5 6 4
no of 5 is 2
no of 2 is 1
no of 6 is 1
no of 4 is 1 ```

### C Program to Count Frequency of each Element in an Array using Function

```#include <stdio.h>

count(int *a,int *b,int n)
{
int i,c,j;
for(i=0; i<n; i++)
{
c=1;
if(a[i]!=-1)
{
for(j=i+1; j<n; j++)

{
if(a[i]==a[j])
{
c++;
a[j]=-1;
}
}
b[i]=c;
}

}

}

print(int *a,int *b,int n)
{
int i;
for(i=0; i<n; i++)
{

if(a[i]!=-1)
{
printf("no of %d is %d \n",a[i],b[i]);

}

}

}
int main()
{
int a[10000],b[10000],i,n;

printf("Enter size of the array : ");
scanf("%d", &n);

printf("Enter elements in array : ");
for(i=0; i<n; i++)
{
scanf("%d",&a[i]);
}

count(a,b,n);

print(a,b,n);

return 0;
}
```

The output of the above c program; as follows:

```Enter size of the array : 5
Enter elements in array : 1 2 34 44 44
no of 1 is 1
no of 2 is 1
no of 34 is 1
no of 44 is 2 ```