Trace Of A Matrix

C Program For Trace Of A Matrix

Source Code:



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

void input(int[20][20],int);
void show(int[20][20],int);
void trace(int[20][20],int);
void main()
{
int a[20][20],m,i,j;
clrscr();
printf("enter num of rows and columns:");
scanf("%d,%d",&m,&m);
input(a,m);
printf("\nEntered matrix is:\n\n");
show(a,m);
trace(a,m);
getch();
}
void input(int a[20][20],int m)
{
 int i,j;
 for(i=0;i<=m-1;i++)
 {
  for(j=0;j<=m-1;j++)
  {
   printf("enter element:");
   scanf("%d",&a[i][j]);
  }
 }
}
void show(int a[20][20],int m)
{
 int i,j;
 for(i=0;i<=m-1;i++)
 {
  for(j=0;j<=m-1;j++)
  {
   printf("%d",a[i][j]);
  }
  printf("\n");
 }
}
void trace(int a[20][20],int m)
{
 int s=0,i,j;
 for(i=0;i<=m-1;i++)
 {
  for(j=0;j<=m-1;j++)
  {
   if(i==j)
   {
    s=s+a[i][j];
   }
  }
 }
 printf("\n\nTRACE=%d",s);
}

OUTPUT:

enter num of rows and columns:3,3
enter element:1                                                                 
enter element:2                                                                 
enter element:3                                                                 
enter element:4                                                                 
enter element:5                                                                 
enter element:6                                                                 
enter element:7                                                                 
enter element:8
enter element:9
                                                                                
Entered matrix is:                                                              
                                                                                
123                                                                             
456                                                                             
789                                                                             
                                                                                
                                                                                
TRACE=15