C Program To Print Tridiagonal Matrix

To write  a C Program To Print Tridiagonal Matrix in C Programming Language - 


Solution For C Program :

/*C Program To Print Tridiagonal Matrix.*/

#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,k;
clrscr();
int mat[5][5]={{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15},{16,17,18,19,20},{21,22,23,24,25}};
printf("Entered matrix is:\n\n");
for(i=0;i<5;i++)
    {
    for(j=0;j<5;j++)
        {
        printf("%d\t",mat[i][j]);
        }
    printf("\n");
    }

printf("\nTridiagnal matrix:\n\n");
printf("%d\t%d\n",mat[0][0],mat[0][1]);
for(i=1;i<5;i++)
    {
    for(k=1;k<i;k++)
        {
        printf("\t");
        }
    if(i==4)
        printf("%d\t%d\n",mat[4][3],mat[4][4]);
    else
        {
        for(j=i;j<5;j++)
            {
            if(i==j)
            printf("%d\t%d\t%d",mat[i][j-1],mat[i][j],mat[i][j+1]);
            }
        printf("\n");
        }
    }
getch();
}


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