C Program to print number border rectangular pyramid
#include
#include
int main()
{
int number, row, col;
printf("\nEnter
Number of Rows to be display : \n");
scanf("%d",
&number);
for
(row = 1; row <= number; row++)
{
for
(col = 1; col <= number; col++)
{
if
(row == 1 || row == number)
{
printf("1\t");
}
else if (col == 1 || col ==
number)
{
printf("1\t");
}
else
{
printf("0\t");
}
}
printf("\n");
}
return
0;
}
Output
Enter Number of Rows
to be display : 6
1 1 1 1 1 1
1 0 0 0 0 1
1 0 0 0 0 1
1 0 0 0 0 1
1 0 0 0 0 1
1 1 1 1 1 1
C Program to print decreasing rectangular pyramid
#include
#include
int main()
{
int number, row, col;
int displaynum;
printf("\n Enter number of rows to be display:\n");
scanf("%d",&number);
for(row=1;row<=number;row++,displaynum--)
{
for (col=1;col<=num;col++)
printf("%d\t",displaynum);
printf("\n");
return 0;
}
Output
Enter number of rows to be display : 5
5 5 5 5 5
4 4 4 4 4
3 3 3 3 3
2 2 2 2 2
1 1 1 1 1
C Program to Print the Rectangle Pyramid of Numbers
#include
#include
int main()
{
printf("\n Enter number of rows to be display: ");
scanf("%d",&number);
for(row=1;number>=row;row++)
{
for(col=1;col<=number;col++)
printf("%d\t”,row);
printf(“\n);
}
return 0;
}
Output
Enter number of rows
to be display: 5
1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
4 4 4 4 4
5 5 5 5 5
C Program to Multiply two Matrices using Recursion
#include
#define max 10
void matrixmultiply(int[max][max],
int[max][max]);
int row1, row2, col1, col2;
int res[max][max];
int main()
{
int mat1[max][max],
mat2[max][max], i, j, k;
printf("Enter the row and
column of first matrix: ");
scanf("%d%d",
&row1, &col1);
printf("Enter the row and
column of second matrix: ");
scanf("%d%d",
&row2, &col2);
if (col1 != row2)
{
printf("Matrix
multiplication is not possible");
}
else
{
printf("Enter
the First matrix: ");
for (i =
0; i < row1; i++)
{
for (j = 0; j < col1; j++)
{
scanf("%d",
&mat1[i][j]);
}
}
printf("Enter
the Second matrix: ");
for (i =
0; i < row2; i++)
{
for (j = 0; j < col2; j++)
{
scanf("%d",
&mat2[i][j]);
}
}
printf("\nThe
First matrix is: n");
for (i =
0; i < row1; i++)
{
printf("\n");
for (j = 0; j < col1; j++)
{
printf("%d
", mat1[i][j]);
}
}
printf("\nThe
Second matrix is: n");
for (i =
0; i < row2; i++)
{
printf("\n");
for (j = 0; j < col2; j++)
{
printf("%d
", mat2[i][j]);
}
}
matrixMultiply(mat1,
mat2);
}
printf("\nThe multiplication
of two matrixes is : \n");
for (i = 0; i < row1; i++)
{
printf("\n");
for (j =
0; j < col2; j++)
{
printf("%d ", res[i][j]);
}
}
return 0;
}
void matrixMultiply(int a[max][max], int
b[max][max])
{
static int sum, i = 0, j = 0, k =
0;
if (i < row1)
{
if
(j < col2)
{
if (k < col1)
{
sum
= sum + a[i][k] * b[k][j];
k++;
matrixMultiply(a,
b);
}
res[i][j] = sum;
sum = 0;
k = 0;
j++;
matrixMultiply(a, b);
}
j = 0;
i++;
matrixMultiply(a,
b);
}
}
Output
Enter the row and
column of first matrix: 2 2
Enter the row and
column of second matrix: 2 2
Enter the First
matrix: 1 2 3 4
Enter the Second
matrix: 1 2 1 2
The First matrix is:
1
2
3
4
The Second matrix is:
1
2
1
2
The multiplication of
two matrixes is:
3
6
7
14
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