Print Pyramid Star Pattern

PRINTING PATTERN:

      *

    ***

  *****

*******

PREREQUISITE:

Basic knowledge of C language and use of loops.

ALGORITHM:

  1. Take the number of rows as input from the user and store it in any variable.(‘r‘ in this case).
  2. Run a loop ‘r’ number of times to iterate through each of the rows. From i=0 to i<r. The loop should be structured as for( i=0 ; i<r : i++).
  3.  Run a nested loop inside the main loop to print the spaces before the pyramid. From k=r to k>i +1. The loop should be structured as for( k=r; k>i+1 ;k–).
  4. Inside this nested loop print white space.
  5. Run another nested loop inside the main loop after the previous loop to print the stars in each column of a row. From j=0 to j<=i*2. The loop should be structured as for( j=0 ; j<i*2; j++).
  6. Inside this nested loop print star.
  7. Move to the next line by printing a new line . printf(“/n”).

Code in C:

#include<stdio.h>
int main()
{
int i,j,k,r;     //declaring integer variables i,j,k for loops and r for number of rows
printf("Enter the number of rows :\n");     //Asking user for input
scanf("%d",&r);      //saving number of rows in variable r
for(i=0;i<r;i++)    //outer loop for number of rows
   {
     for(k=r;k>i+1;k--)     //nested loop for number of spaces
       {
          printf(" ");     //printing spaces
       }
     for(j=0;j<=i*2;j++)     //nested loop for printing stars
       {
          printf("*");      //printing stars
       } 
    printf("\n");     //printing newline
   }
}

TAKING INPUT:
DISPLAYING OUTPUT:

8 comments on “Print Pyramid Star Pattern”


  • Arthi

    n = int(input())
    c = 1
    for i in range(1,2*n,2):
    print(” “*(n-c)+”*”*i+” “*(n-c))
    c +=1


  • Padmaja

    #include
    int main()
    {
    int i,j,n,p;
    printf(“enter rows”);
    scanf(“%d”,&n);
    for(i=1;i<=n;i++)
    {
    for(j=i;j<=n-1;j++)
    {
    printf(" ");
    }
    p=0;
    while(p<(2*i-1))

    {
    printf("*");
    p++;
    }
    printf("\n");
    }
    }


  • Sudip

    #include
    int main(){
    int i,row=4,sp,p;
    for (i = 0; i i; sp–)
    {
    printf(” “);
    }
    for (p = 1; p <= 2*i+1; p++)
    {
    printf("*");
    }
    printf("\n");
    }
    return 0;
    }


  • Janu

    Python code
    n = int(intput())
    k = 2*n – 1
    for i in range(1,n+1):
    print(‘ ‘*(k//2),end=””)
    print(‘*’*(2*i – 1))
    k = 2*(n-i)-1


  • Aninda Ganguly

    #include

    int main()
    {
    int i,j,k,n;
    scanf(“%d”,&n);

    for(i=0;i<n;i++){
    for(k=0;k<n-i-1;k++){
    printf(" ");
    }
    for(j=0;j<=i*2;j++){
    printf("*");
    }
    printf("\n");
    }
    return 0;
    }


  • kasi

    python
    ———–
    n=int(input())
    for i in range(n):
    for j in range(n-i):
    print(” “,end=””)
    for j in range((2*i)+1):
    print(“*”,end=””)
    print(end=”\n”)