1.Square Pattern

I have added numbers to make you understand how we will create this pattern using for loop

• As we know we first see how many lines of code needs to be printed, in this case it is 9
• Since we will take user input it can be simply n which will be taken from user
• So now we know i will iterate from 1 to n
• In this simple pattern the number of times the symbol is printed is same as n i.e 9
• So j will also iterate from 1 to n
• Remember to use \n to move to next line

Code

#include<stdio.h>

#include<conio.h>

void main(){

int i,j,n;

clrscr();

printf("Enter number of lines ");

scanf("%d",&n);

for(i=1;i<=n;i++)

    {

          for(j=1;j<=n;j++)

               {

                 printf("*");   

                   }

           printf("\n");

     }

getch();

}

Note: scanf is used for taking user input