Question

Homework 4 Files to submit: mat add.c Time it took Matthew to Complete: 10 mins IN C All programs must compile without warnings when using the-Wall and-Werror options Submit only the files requested Your program must match the output exactly to receive credit. Make sure that all prompts and output match mine exactly. o Easiest way to do this is to copy and paste them All input will be valid unless stated otherwise Print all real numbers to two decimal places unless otherwise stated . The examples provided in the prompts do not represent all possible input you can receive. All inputs in the examples in the prompt are underlined You don't have to make anything underlined it is just there to help you differentiate between what you are supposed to print and what is being given to your program o If you have questions please post them on Piazza . Restrictions No global variables are allowed Your main function may only declare variables, call other functions, and assign variables values.

Answer 1

#include<stdio.h>
#include<stdlib.h>

void printMatrix(int **A, int n, int m) {
   int i = 0, j = 0;
   while(i<n){
      j = 0;
      while(j<m) {
         printf("%d ", A[i][j]);
         j++;
      }
      printf("\n");
      i++;
   }
   printf("\n");

}

int** makeMatrix(int n, int m) {
   int i = 0;
   int** A = (int**)malloc(sizeof(int*)*n);
   while(i<n){
      A[i] = (int*)malloc(sizeof(int)*m);
      i++;
   }
   return A;
}

void main() {
   int A[10][10];
   int B[10][10];
   int i = 0,j = 0,n, m;
   int** sum;
   printf("Enter number of rows: ");
   scanf("%d",&n);
   printf("Enter number of columns: ");
   scanf("%d",&m);
   sum = makeMatrix(n,m);
   printf("Enter matrix A: \n");
   while(i<n){
      j = 0;
      while(j<m) {
         scanf("%d", &A[i][j]);
         j++;
      }
      i++;
   }
   printf("Enter matrix B: \n");
   i = 0;
   while(i<n){
      j = 0;
      while(j<m) {
         scanf("%d", &B[i][j]);
         j++;
      }
      i++;
   }
   i = 0;
   while(i<n){
      j = 0;
      while(j<m) {
         sum[i][j] = A[i][j] + B[i][j];
         j++;
      }
      i++;
   }
   printf("\nA+B:\n");
   printMatrix(sum,n, m);
}

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