1. Implement a program that contains the following functions: a) A function that

Question

1.       Implement a program that contains the following functions:

a) A function that reads a numeric matrix from the input. The function will first read the dimensions of the matrix and then the elements of the matrix.

b) A function that prints a matrix.

c) A function that performs the sum of two matrices.

d) A function that performs the multiplication of two matrices.

e) A main function that uses the above functions to read two matrices A and B, then compute and print their sum and their multiplication

Explanation / Answer

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any changes needed, let me know, I'll do it (tested using DEV C++)

#include <iostream>
#include <iomanip>
void input(int[][10],int);
void multMatrix(int[][10], int[][10],int[][10],int);
void addMatrix(int[][10], int[][10],int[][10],int);
void print(int[][10],int,char[]);
using namespace std;
int main()
{
int n,m,i,j;       
int a[10][10],b[10][10],c[10][10];
cout<<"Enter number of rows and columns(max 10): ";
cin>>n;
while(n>10)
    {cout<<"invalid size ";
     cout<<"Enter number of rows (max 10): ";
     cin>>n;
     }
cout<<"Enter matrix 1 ";
input(a,n);
cout<<"Enter matrix 2 ";
input(b,n);  
cout<<"The starting matrices: ";
print(a,n,"1");
print(b,n,"2");
multMatrix(a,b,c,n);   
print(c,n, "after multiplication");
addMatrix(a,b,c,n);   
print(c,n, "after addition");
system("pause");
return 0;
}
   
void input(int a[][10],int n)
{int i,j;
for(i=0;i<n;i++)
   for(j=0;j<n;j++)
     {cout<<"Enter element ["<<i<<"]["<<j<<"]: ";
      cin>>a[i][j];
    }
}
void multMatrix(int a[][10],int b[][10],int c[][10],int n )
{int i,j,k;
for(i=0;i<n;i++)
     for(j=0;j<n;j++)
         c[i][j]=0;
   for(i=0;i<n;i++)
      for(j=0;j<n;j++)
        for(k=0;k<n;k++)         
           c[i][j]+=a[i][k]*b[k][j];
}

void print(int a[][10],int n,char mess[])
{int i,j;
cout<<" matrix "<<mess<<endl;
for(i=0;i<n;i++)
{for(j=0;j<n;j++)
     cout<<a[i][j]<<" ";
     cout<<endl;
}
}
void addMatrix(int a[][10],int b[][10],int c[][10],int n )
{int i,j,k;
   for(i=0;i<n;i++)
      for(j=0;j<n;j++)
        c[i][j]=a[i][j]+b[i][j];
}

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