C Exercises: Display the upper triangular of a given matrix
C Array: Exercise-27 with Solution
Write a program in C to print or display an upper triangular matrix.
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
void main()
{
int arr1[10][10],i,j,n;
float determinant=0;
printf("\n\nDisplay the upper triangular of a given matrix :\n");
printf("----------------------------------------------\n");
printf("Input the size of the square matrix : ");
scanf("%d", &n);
printf("Input elements in the first matrix :\n");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
printf("element - [%d],[%d] : ",i,j);
scanf("%d",&arr1[i][j]);
}
}
printf("The matrix is :\n");
for(i=0;i<n;i++)
{
for(j=0;j<n ;j++)
printf("% 4d",arr1[i][j]);
printf("\n");
}
printf("\nSetting zero in upper triangular matrix\n");
for(i=0;i<n;i++)
{
printf("\n");
for(j=0;j<n;j++)
if(i>=j)
printf("% 4d",arr1[i][j]);
else
printf("% 4d",0);
}
printf("\n\n");
}
Sample Output:
Display the upper triangular of a given matrix : ---------------------------------------------- Input the size of the square matrix : 3 Input elements in the first matrix : element - [0],[0] : 1 element - [0],[1] : 2 element - [0],[2] : 3 element - [1],[0] : 4 element - [1],[1] : 5 element - [1],[2] : 6 element - [2],[0] : 7 element - [2],[1] : 8 element - [2],[2] : 9 The matrix is : 1 2 3 4 5 6 7 8 9 Setting zero in upper triangular matrix 1 0 0 4 5 0 7 8 9
Flowchart:

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C Programming: Tips of the Day
C Programming - What is the argument for printf that formats a long?
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unsigned long n; long m; printf("%lu %ld", n, m);
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