C program to print different Star Formations using For Loop

Here is the code to print different star formations using for loop.

#include "stdio.h" int main() {     int num,i,j,k,m,n,o,p;      printf("Please enter a number to print the star formations \n");      scanf("%d", &num);        for(i=0;i<num;i++)     {     for(j=0;j<num;j++)         {                 printf("*");         }                 printf("\n");     } printf("\n"); j=0,i=0,k=0; // Hollow Star formation     for(i=0;i<num;i++)     {     for(j=0;j<num;j++)         {             if(i==0 || i==num-1)             {                 printf("*");                }             else if(j==0 || j==num-1)             {                 printf("*");             }             else             {                 printf(" ");             }         }         printf("\n");     }      // downward descending formation      printf("\n");      j=0,i=0,k=0;      for(i=num;i>0;i--)         {             for(j=i;j>0;j--)             {                 printf("*");             }             printf("\n");         } printf("\n"); j=0,i=0,k=0;       for(i=num;i>=0;i--)         {             for(k=i;k<num;k++)             {             printf(" ");             }             for(j=0;j<=i-1;j++)             {                 printf("*");             }             printf("\n");         } printf("\n"); j=0,i=0,k=0; // Star formation right angle triangle.         for(i=num;i>0;i--)         {             for(j=0;j<i-1;j++)             {                 printf(" ");             }             for(k=j;k<num;k++)             {             printf("*");             }             printf("\n");         } printf("\n"); j=0,i=0,k=0;     for(i=0;i<num;i++)     {     for(j=0;j<=i;j++)         {                 printf("*");         }                 printf("\n");     }      return 0; }

The output of the above code is following:

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