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.

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.

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

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