C Program to Find Mode of an Array

This C program finds mode in an array.

Here is the source code of the C program to display mode of an array. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```
```
 * C progarm to find mode in an array
```
```
 */
```
```
#include <stdio.h>
```
```
 
```
```
int main()
```
```
{
```

    int i, j, a[20] = {0}, sum = 0, n, t, b[20] = {0}, k = 0, c = 1, max = 0, mode;

```
    float x = 0.0, y = 0.0;
```
```
    printf("\nEnter the limit\n");
```
```
    scanf("%d", &n);
```

    printf("Enter the set of numbers\n");

```
    for (i = 0; i < n; i++)
```
```
    {
```
```
        scanf("%d", &a[i]);
```
```
    }
```
```
    for (i = 0; i < n - 1; i++)
```
```
    {
```
```
        mode = 0;
```
```
        for (j = i + 1; j < n; j++)
```
```
        {
```
```
            if (a[i] == a[j]) {
```
```
                mode++;
```
```
            }
```
```
        }
```

        if ((mode > max) && (mode != 0)) {

```
            k = 0;
```
```
            max = mode;
```
```
            b[k] = a[i];
```
```
            k++;
```
```
        }
```
```
        else if (mode == max) {
```
```
            b[k] = a[i];
```
```
            k++;
```
```
        }
```
```
    }
```
```
    for (i = 0; i < n; i++)
```
```
    {
```
```
        if (a[i] == b[i]) 
```
```
            c++;
```
```
        }
```
```
        if (c == n)
```

            printf("\nThere is no mode");

```
        else
```
```
        {
```
```
            printf("\nMode\t= ");
```
```
            for (i = 0; i < k; i++)
```
```
                printf("%d ",b[i]);
```
```
        }
```
```
        printf("\n");
```
```
        return 0;
```
```
    }
```

$ gcc mode.c 
$ a.out
 
Enter the limit
10
Enter the set of numbers
1 2 2 3 4 5 5 6 7 8  
 
Mode    = 2 5

Sanfoundry Global Education & Learning Series – 1000 C Algorithms.

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