hamsazeh.cpp

some useful programs and simple yet

#include<stdio.h>
#include<conio.h>

/*
	This program makes a new 3x3 matrix by removing one Row and
	one Column from the original 4x4 matrix
	BY: Morteza Zafari 2001.
*/

void main(){
	int i,j,mat[4][4],ham[3][3];
	textcolor(9);
	clrscr();
	printf(" ---------------------------------------------------------------");
	printf("\n This program makes a new 3x3 matrix by removing one Row and");
	printf("\n one Column from the original 4x4 matrix");
	printf("\n BY: Morteza Zafari 2001.\n");
	printf(" ---------------------------------------------------------------");
	getch();
	textcolor(1);
	clrscr();
	// Getting data from user, for a 4x4 matrix.
	for(i=0;i<4;i++){
		for(j=0;j<4;j++){
			mat[i][j]=j+i;
			printf(" Enter Row: %d, Col: %d: ",i+1,j+1);
			scanf ("%d",&mat[i][j]);
		}
		printf("\n");
	}

	// Asking the user which Row and Col to delete
	//printf("\n");
	int r,c;
	int row2del,col2del;

	printf(" Which Row and Col to delete? [1-4] \n");
	printf(" Row: ");
	scanf ("%d",&row2del);
	printf(" Col: ");
	scanf ("%d",&col2del);

	c=0;
	r=0;

	// Calculating the new 3x3 Matrix.
	for(i=0;i<4;i++){
		for(j=0;j<4;j++){
			if (i!=row2del-1 && j!=col2del-1){
				ham[r][c]=mat[i][j];
				c++;
			}
		}
		if(i!=row2del-1 && j!=col2del-1){
			r++;
			c=0;
		}
	}
	// Printing the old 4x4 Martix.
	clrscr();
	printf("\n\n");
	for(i=0;i<4;i++){
		printf("|");
		for(j=0;j<4;j++){
			printf(" %4d ",mat[i][j]);
		}
		printf("|\n");
	}
	printf("\n By deleting Row=%d and Col=%d of this matrix we will have: ",row2del,col2del);
	printf("\n\n");

	// Printing the new 3x3 Matrix.
	for(i=0;i<3;i++){
		printf("|");
		for(j=0;j<3;j++){
			printf(" %4d ",ham[i][j]);
		}
		printf("|\n");
	}

	getch();
}