Square Star Pyramid

Q. Write a C program to print the square star pyramid design as:

 **** 
*    *
*    *
 ****

Ans.

/*c program for star square design*/
#include<stdio.h>
int main()
{
 int cols,rows,r,c,sp;
 printf("Enter no. of columns: ");
 scanf("%d", &cols);
 printf("Enter no. of rows: ");
 scanf("%d", &rows);
 for(r=1; r<=cols; r++)
 {
  if(r==1 || r==cols)
      printf(" ");
  else
      printf("*");
 }
 printf("
");
 for(c=1; c<=rows-2; c++)
 {
   printf("*");
   for(sp=1; sp<=cols-2; sp++)
       printf(" ");
   printf("*
");
 }
 for(r=1; r<=cols; r++)
 {
   if(r==1 || r==cols)
       printf(" ");
   else
       printf("*");
 }
 getch();
 return 0;
}

The output of above program would be:

Figure: Screen shot for Square Star Pyramid C program

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Rectangle number pyramid

Q. Write a C program for print the following number design or number pyramid or number rectangle:

33333
32223
32123
32223
33333

Ans.

To make the above program make module/program and add all module(tips):

Figure: How to write above program tips

/*c program for print number rectangle pyramid*/
#include<stdio.h>
int main()
{
 int i,j,k,n=3,r;
 for(j=1; j<=5; j++)
    printf("%d",n);
 printf("
");
 for(r=1; r<=3; r++)
 {
  for(i=3; i>=2; i--)
    printf("%d", i);
  for(k=n-r; k>=0; k--)
  {
    if(k==0)
      printf("2");
    else
    {
      printf("%d",k);
      break;
    }
  }
  for(i=2; i<=3; i++)
     printf("%d",i);
  printf("
");
 }
 for(j=1; j<=5; j++)
     printf("%d",n);
 return 0;
}

The output of above program would be:

Screen shot for rectangle number pyramid C program

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Quadrilateral pyramid

Q. Write a program in C to display the following output:

			1
		2	1	2
	3	2	1	2	3
4	3	2	1	2	3	4
	3	2	1	2	3
		2	1	2
			1

Ans.

/*c program for quadrilateral number pyramid*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num=4,r,c,z,sp;
 for(r=1; num>=r; r++)

 {

   for(sp=num-r; sp>=1; sp--)
      printf(" ");
   for(c=r; c>=1; c--)
      printf("%d",c);
   for(z=2; z<=r; z++)
      printf("%d",z);
   printf("
");
 }
 for(r=1; num>=r; r++)
 {
   for(sp=r; sp>=1; sp--)
      printf(" ");
   for(c=num-r; c>=1; c--)
      printf("%d",c);
   for(z=2; z<=num-r; z++)
      printf("%d",z);
   printf("
");
 }
 getch();
 return 0;
}

/******************Output*****************

			1
		2	1	2
	3	2	1	2	3
4	3	2	1	2	3	4
	3	2	1	2	3
		2	1	2
			1

***************************************/

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