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Title MATRIX ADDITION AND MULTIPLICATION
Author Raji
Author Email rajesh_ [at] myself.com
Description This program will add or multiply two matrix on the basis of given choice. It was the first question of my assingment in my 3rd sem.
Am a student of m.p.christian college of engg. and technology, bhilai.

Category C » Beginners / Lab Assignments
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Code : #include<iostream.h> #include<conio.h> #include<process.h> int a[10][10],b[10][10],x[10][10]; void add() { int r,c,i,j,n; cout<<"ENTER THE ORDER OF MATRIX : "; cin>>n; r=n; c=n; cout<<"ENTER THE ELEMENTS FOR MATRIX 'A' :"<<endl; for(i=0;i<r;i++) { for(j=0;j<c;j++) { cin>>a[i][j]; } } cout<<"ENTER THE ELEMENTS FOR MATRIX 'B' : "<<endl; for(i=0;i<r;i++) { for(j=0;j<c;j++) { cin>>b[i][j]; } } clrscr(); cout<<"MATRIX 'A' IS "<<endl; for(i=0;i<r;i++) { for(j=0;j<c;j++) { cout<<a[i][j]<<" "; } cout<<endl; } cout<<"MATRIX 'B' IS "<<endl; for(i=0;i<r;i++) { for(j=0;j<c;j++) { cout<<b[i][j]<<" "; } cout<<endl; } //.....................ADDITION OF MATRIX........................ for(i=0;i<r;i++) { for(j=0;j<c;j++) { x[i][j]=a[i][j]+b[i][j]; } } cout<<"THE SUM OF TWO ENTERED MATRIX IS "<<endl; for(i=0;i<r;i++) { for(j=0;j<c;j++) { cout<<x[i][j]<<" "; } cout<<endl; } } void multiply() { int r1,c1,r2,c2,i,j,k; clrscr(); cout<<"ENTER THE NO.OF ROWS OF MATRIX (A) : "; cin>>r1; cout<<"ENTER THE NO.OF COLOUMS OF MATRIX (A) :"; cin>>c1; cout<<"ENTER THE ELEMENTS FOR MATRIX (A) :"<<endl; for(i=0;i<r1;i++) { for(j=0;j<c1;j++) { cin>>a[i][j]; } } cout<<"ENTER THE NO.OF ROWS OF MATRIX (B) : "; cin>>r2; cout<<"ENTER THE NO.OF COLOUMS OF MATRIX (B) : "; cin>>c2; cout<<"ENTER THE ELEMENTS FOR MATRIX (B) :"<<endl; for(i=0;i<r2;i++) { for(j=0;j<c2;j++) { cin>>b[i][j]; } } clrscr(); cout<<"MATRIX 'A' IS "<<endl; for(i=0;i<r1;i++) { for(j=0;j<c1;j++) { cout<<a[i][j]<<" "; } cout<<endl; } cout<<"MATRIX 'B' IS "<<endl; for(i=0;i<r2;i++) { for(j=0;j<c2;j++) { cout<<b[i][j]<<" "; } cout<<endl; } if(c1!=r2) { cout<<"MULTIPLICATION IS NOT POSSIBLE "; } else { for(i=0;i<r1;i++) { for(j=0;j<c2;j++) { x[i][j]=0; for(k=0;k<c1;k++) { x[i][j]=x[i][j]+(a[i][k]*b[k][j]); } } } } cout<<"MULTIPLICATION OF TWO MATRIX IS "<<endl; for(i=0;i<r1;i++) { for(j=0;j<c2;j++) { cout<<x[i][j]<<" "; } cout<<endl; } } void main() { clrscr(); while(1) { int ch; cout<<" "; cout<<"...ENTER YOUR CHOICE........"<<endl; cout<<"1. ADDITION OF TWO MATRIX "<<endl; cout<<"2. MULTIPLICATION OF TWO MATRIX "<<endl; cout<<"3. EXIT "<<endl; cin>>ch; switch(ch) { case 1: add(); break; case 2: multiply(); break; case 3: exit(0); default : cout<<"INVALID CHOICE !! ENTER CORRECT CHOICE"; } //getch(); } }

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