C code to print or display lower triangular matrix




#include<stdio.h>
int main(){
  int a[3][3],i,j;
  float determinant=0;
  printf("Enter the 9 elements of matrix: ");
  for(i=0;i<3;i++)
      for(j=0;j<3;j++)
           scanf("%d",&a[i][j]);
  printf("\nThe matrix is\n");
  for(i=0;i<3;i++){
      printf("\n");
      for(j=0;j<3;j++)
           printf("%d\t",a[i][j]);
  }
   printf("\nSetting zero in upper triangular matrix\n");
   for(i=0;i<3;i++){
      printf("\n");
      for(j=0;j<3;j++)
           if(i<=j)
             printf("%d\t",a[i][j]);
           else
             printf("%d\t",0);
  }
   return 0;
}
Enter the 9 elements of matrix: 1
2
3
4
5
6
7
8
9
The matrix is
1       2       3
4       5       6
7       8       9
Setting zero in upper triangular matrix
1       2       3
0       5       6
0       0       9

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