Question

COMP1410 - Lab Exercises #3 (Due at the end of the lab period or beginning of the next) Start Date: Oct. 1st, 2019 Objectives: Practice dealing with 2D arrays. Create a two dimensional array (e.g. int A2D[M] [N] ;) of size MXN to store integer values. Use #define M 4 and N 3 to start. (Using symbolic constants instead of hard coding the array sizes improves scalability). Create an interactive menu within main() for this program (call it Lab3.c) with choices to fill the array with random numbers, search the array, right shift the array, print the array and quit. Your program must code and document the following functions: • printArray2D() to print the array in a table format (use formatting codes to achieve this). • populateRandom2D() to populate the array with pseudo-random numbers between min and max numbers entered by the user. linearSearch2D () to search the array for a value. rightShift2D() to right shift the array. RIGHT shift means move every element one position to the RIGHT; the last element becomes the first one, and the last element in each row moves down to become the first element in the next row. Each one of the functions above accepts a 2D array as a parameter, along with any additional parameters that you may find necessary. The return types of the functions are also your choice. Do NOT use global (i.e. file scope) variables in this program. Sample Interaction Lab3 1 - Fill the array 2 - Search the array 3 - Right shift the array 0 - QUIT Please enter a selection: 1 Enter min number in the array: 2 Enter max number in the array: 20 coipo on

Answer 1

Here I am providing the answer for the above question:

Code:

#include <stdio.h>
#include<stdlib.h>
#define M 4
#define N 3

void printArray2D(int A2D[][N])
{
for(int i=0;i<M;i++)
{
for(int j=0;j<N;j++)
printf("%d ",A2D[i][j]);
printf("\n");
}
}

void populateRandom2D(int A2D[][N])
{
int max,min;
printf("Enter min number in the array:");
scanf("%d",&min);
printf("Enter max number in the array:");
scanf("%d",&max);
for(int i=0;i<M;i++)
for(int j=0;j<N;j++)
A2D[i][j] = (rand() % (max - min + 1)) + min;
  
printf("Array is filled.\nThe array is:\n");
printArray2D(A2D);
}

void linearSearch2D(int A2D[][N])
{
int key,flag=0;
printf("Enter the value to be searched:");
scanf("%d",&key);
for(int i=0;i<M;i++)
for(int j=0;j<N;j++)
if(A2D[i][j]==key)
{
printf("Value found\n");
flag=1;
break;
}
if(flag==0)
printf("Value not found");
}

void rightShift2D(int A2D[][N])
{
printf("Before Rotate:\n");
printArray2D(A2D);
int left,right;
for(int i=0;i<M;i++)
{
right=A2D[i][N-1];
A2D[i][N-1]=A2D[i][N-2];
A2D[i][N-2]=A2D[i][0];
A2D[i][0]=right;
}
printf("After Rotate:\n");
printArray2D(A2D);
}

int main()
{
int A2D[M][N],option,flag=0;
while(1)
{
printf("\nLab3\n--------\n1 - Fill the array\n2 - Search the array\n3 - Right shift the array\n0 - Quit\n\nPlease enter a selection:");
scanf("%d",&option);
switch(option)
{
case 1:
populateRandom2D(A2D);
break;
case 2:
linearSearch2D(A2D);
break;
case 3:
rightShift2D(A2D);
break;
case 0:
flag=1;
printf("Thanks for using!!!");
break;
}
if(flag==1)
break;
}
}

Screenshot of the program:

#include <stdio.h> #include<stdlib.h> #define M4 #define N 3 void printArray2D(int A2D[][N]), for(int i=0;i<M;i++) for(int j=0; j<N;j++) printf("%d ", A2D[i][j]); printf("\n"); void populateRandom2D(int A2D[][N]), int max,min; printf("Enter min number in the array:"); scanf("%d",&min); printf("Enter max number in the array:"); scanf("%d",&max); for(int i=0;i<M;i++) for(int j=0; j<N; j++) A2D[i[j] = (rand() % (max - min + 1)) + min; printf("Array is filled. \nThe array is:\n"); printArray2D(A2D);

void linearSearch2D(int A2D[][N]), int key,flag=0; printf("Enter the value to be searched:"); scanf("%d",&key); for(int i=0;i<M;i++) for(int j=0; j<N;j++) if(A2D[i][j]==key) printf("Value found\n"); flag=1; break; } if(flag==0) printf("Value not found"); void rightShift2D(int A2D[][N]), printf("Before Rotate: \n"); printArray2D(A2D); int left, right; for(int i=0;i<M;i++) right=A2D[i][N-1]; A2D[i][N-1)=A2D[i][N-2]; A2D[i][N-2]=A2D[i][@]; A2D[i][0]=right; } printf("After Rotate:\n"); printArray2D(A2D);

int main() int A2D[M][N],option, flag=0; while(1) printf("\nLab3\n--------\n1 - Fill the array\n2 - Search the array\n3 - Right shift the array\no - Quit\n\ scanf("%d",&option); switch(option) case 1: populateRandom2D(A2D); break; case 2: linearSearch2D(A2D); break; case 3: rightShift2D(A2D); break; case 0: flag=1; printf("Thanks for using!!!"); break; if(flag==1) break;

Output:

Lab3 -------- 1 - Fill the array 2 - Search the array 3 – Right shift the array 0 - Quit Please enter a selection:1 Enter min number in the array:2 Enter max number in the array:20 Array is filled. The array is: 4 17 5 5 12 10 12 13 4 9 3 11 Lab3 1 - Fill the array 2 - Search the array 3 – Right shift the array 0 - Quit Please enter a selection:2 Enter the value to be searched:44 Value not found

Lab3 -------- 1 - Fill the array 2 - Search the array 3 – Right shift the array 10 - Quit Please enter a selection:3 Before Rotate: 4 17 5 5 12 10 12 13 4 9 3 11 After Rotate: 5 4 17 10 5 12 4 12 13 11 9 3 Lab3 -------- 1 - Fill the array 2 - Search the array 3 – Right shift the array 0 - Quit Please enter a selection:0 Thanks for using!!!

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