C Program to Implement Algorithm to Find Mode in 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.

```
/*
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```
 * C progarm to find mode in an array
```
```
 */
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```
#include <stdio.h>
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```
 
```
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int main()
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{
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    int i, j, a[20] = {0}, sum = 0, n, t, b[20] = {0}, k = 0, c = 1, max = 0, mode;

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

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

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

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

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            k = 0;
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            max = mode;
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            b[k] = a[i];
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            k++;
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        }
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        else if (mode == max) {
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            b[k] = a[i];
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            k++;
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        }
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    }
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    for (i = 0; i < n; i++)
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```
    {
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        if (a[i] == b[i]) 
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            c++;
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        }
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        if (c == n)
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            printf("\nThere is no mode");

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

$ 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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