### C program to find out the maximum and minimum number in an array :

In this c programming tutorial, we will learn *how to find the maximum and minimum number in an array using ācā*. All the elements for the array, we will take as input from the user. Then, we will find out *maximum* and *minimum* number in the array using *two different functions*. I will explain in step by step but first take a look into the program :

### C Program :

```
#include <stdio.h>
//6
int find_max(int arr[], int size)
{
int i;
//7
int max = -1;
//8
for (i = 0; i < size; i++)
{
if (arr[i] > max)
{
max = arr[i];
}
}
//9
return max;
}
//10
int find_min(int arr[], int size)
{
int i;
//11
int min = arr[0];
//12
for (i = 1; i < size; i++)
{
if (arr[i] < min)
{
min = arr[i];
}
}
//13
return min;
}
int main()
{
//1
int i, total;
//2
printf("Enter total no of elements : ");
scanf("%d", &total);
//3
int myArray[total];
//4
for (i = 0; i < total; i++)
{
printf("Enter no %d : ", i + 1);
scanf("%d", &myArray[i]);
}
//5
int maximumNo = find_max(myArray, total);
int minimumNo = find_min(myArray, total);
//14
printf("Maximxum number in the array is %d \n", maximumNo);
printf("Minimum number in the array is %d \n", minimumNo);
}
```

### Explanation of the program :

*The commented numbers in the above program indicates the below steps :*

- Create two variables
*i*and*total*. - Take the
*size of the array*as input from the user and save it in the variable*total*. - Create one new array
*myArray*and the size of the array should be same as the variable*total*. - Use one
*for loop*and read all elements . Store the elements in the array*myArray*. - Now, find the
*maximum*and*minimum*numbers in the array using two different functions*find_max*and*find_min*. Save these values in the int variables*maximumNo*and*minimumNo*. *find_max*method is defined as*int find_max(int arr[],int size)*i.e. it takes one*array*and its*size*as input and returns one*int*variable. This return value is the*maximum value*in the input array.- Create one integer variable
*max*and store*-1*in it. We are storing one minimum value in this variable so that we can compare it with other elements of the array and update the*max*value. - Now, run one
*for loop*and check for each element in the array. If value of a element is greater than*max*, set its value to*max*. - After the
*for loop*is completed, the*max*variable will hold the maximum value of the array. Return this variable from the function. - Similar to
*find_max*,*find_min*finds the minimum value in an array .*int find_min(int arr[],int size)*finds the minimum value in the array*arr*. - The process is similar to the above function. First we have initialized one variable
*min*and store the*first element*of the array in it. - We will start scanning the elements starting from the
*second element*using one*for loop*. We will compare it with each element and if any element is*less than min*, set this value to*min*. - After the loop completes, return the
*min*value. - Finally, print the
*maximum*and*minimum*values.

### Example Outputs :

```
Enter total no of elements : 5
Enter no 1 : 34
Enter no 2 : 10
Enter no 3 : 23
Enter no 4 : 13
Enter no 5 : 99
Maximxum number in the array is 99
Minimum number in the array is 10
Enter total no of elements : 2
Enter no 1 : 2
Enter no 2 : 1
Maximxum number in the array is 2
Minimum number in the array is 1
Enter total no of elements : 10
Enter no 1 : 1
Enter no 2 : 2
Enter no 3 : 3
Enter no 4 : 4
Enter no 5 : 5
Enter no 6 : 6
Enter no 7 : 7
Enter no 8 : 8
Enter no 9 : 9
Enter no 10 : -10
Maximxum number in the array is 9
Minimum number in the array is -10
```