Source code for Square shaped Star pattern in C language with user defined rows and colums. (Program 12)

/* Made by Anmol main 

student B.tech CSE 

Punjabi university 

Program 12*/

#include<stdio.h>

int main() 

{   int i,j,num1,num2;

    int a,b; //this is used to quit the program if user input character in place of integer

    printf("Enter number of rows : ");

    scanf("%d",&num1);

    if (num1<0)

        printf("\nPlease enter valid integer\n");

    if (num1>0) {

        printf("Enter number of colums : ");

        scanf("%d",&num2);

        if (num2<0)

            printf("\nPlease enter valid integer\n");

        else {

            for(i=1; i<=num1; i++)

            {

                for(j=1; j<=num2; j++)

                    printf("* ");

                printf("\n");

            }

        }

    }

    return 0;

}