Question

1. Declare two dimensional double array with 3 rows and 4 columns. a) Use scanf to read the elements for this array. b) Write a function that computes the average of the above array. c) Write a function that computes the minimum of the above array.

Answer 1

Answer:

Following are the program in the C Programming Language:

#include <stdio.h> //header file

float avgs(int a[3][4]){ //define function

 int s =0, c=0; //set integer type variable

 float avg=0;   //set float type variable

 //set for loops to find sum of an array

 for (int i = 0; i < 3; i++){

   for (int j = 0; j < 4; j++){

   s = s + a[i][j];

   c +=1;

   }

 }

 //find average of an array  

 avg = s / c;

 return avg;

}

int min(int a[3][4]){//define function

 int m = a[0][0];  //set integer type variable  

 //set for loop for traversing

 for (int i = 0; i < 3; i++)

 {  for (int j = 0; j < 4; j++){

     if(m > a[i][j])

       m = a[i][j];

   }

 }

 return m;

}

int main(){//define main function

 int a[3][4];//set integer type Array

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

 for (int i = 0; i < 3; i++)

  for (int j = 0; j < 4; j++)

     scanf("%d", &a[i][j]);

 printf("\n Average of an array: %f", avgs(a));

 printf("\n Smallest element of an array: %d", min(a));

 return 0;

}

Explanation:

Here, we define header file "stdio.h" for print or scan the data.

Then, we define float type function "avgs()" for find the average of an array inside it.

• we set two integer type variable for sum and count
• we set float type variable to store average of an array
• we set the for loops for the sum of an array.
• we divide sum from count to find average and return it.

Then, we define integer type function "min()" to find the minimum value of an array.

• we set integer type variable to store array elements
• we set the for loops for traversing the array
• we set if statement to find minimum value of an array.
• we return the minimum value of an array.

Then, we define integer type "main()" function to call both the functions.

• we set integer type array variable and get input from the user in it with the help of for loops.

• we call both the functions with message and return 0.