Solid Rectangle in C, C++, Java & Python – Code with Explanation & Examples in Short and Simple

   

C Program

#include <stdio.h>
int main(){
    int r=3,c=5;
    for(int i=0;i<r;i++,puts(""))
        for(int j=0;j<c;j++) printf("* ");
}

C Output

Input:  
Rows = 3  
Cols = 5 

Output:  
* * * * *  
* * * * *  
* * * * *

C++ Program

#include <iostream>
using namespace std;
int main(){
    int r=4,c=6;
    for(int i=0;i<r;i++,cout<<"\n")
        for(int j=0;j<c;j++) cout<<"* ";
}

C++ Output

Input:  
Rows = 4  
Cols = 6 

Output:  
* * * * * *  
* * * * * *  
* * * * * *  
* * * * * *

JAVA Program

public class Main{
    public static void main(String[] a){
        int r=2,c=7;
        for(int i=0;i<r;i++,System.out.println())
            for(int j=0;j<c;j++) System.out.print("* ");
    }
}

JAVA Output

Input:  
Rows = 2  
Cols = 7  

Output:  
* * * * * * *  
* * * * * * *

Python Program

r,c = 5,4
for _ in range(r):
    print("* " * c)

Python Output

Input:  
Rows = 5  
Cols = 4  

Output:  
* * * *  
* * * *  
* * * *  
* * * *  
* * * *

In-Depth Explanation

Example

Suppose we provide the program rows = 3 and cols = 5. The outer loop iterates 3 times (for the rows), and for every iteration, the inner loop iterates 5 times (for the columns). This gives us 15 * characters in a perfect rectangle.

Real-Life Analogy

Consider building a wall out of bricks. You work on one horizontal line (one row) before you go to the next row. The inner loop is similar to putting each brick in one row, and the outer loop is similar to piling up the rows until the wall is finished.

Why It Matters

Printing stars is superficial, to be sure, but this is one of the fundamentals of programming logic. All patterns — triangles, pyramids, diamonds — begin with learning this row-column printing mechanism. Without it, more complex pattern problems are made all the harder.

Learning Insights

The outer loop is vertical movement (rows). The inner loop is horizontal movement (columns). The position of the newline is important — it must be placed after the inner loop completes, not within it, or the figure will become distorted. In C and C++, puts("") and cout<<"\

" print newlines fast. In Java, System.out.println() does this, and in Python, we just print a string repeatedly.

Real-World Application

This concept is the foundation of table formatting in CLI tools, generating game maps, or even printing invoices in tabular form. If you’ve ever used a spreadsheet, think of each cell as a position where the inner loop decides what to place.

Interview & Competitive Programming Context

Pattern printing issues are preferred warm-up interview questions. They appear simple, but interviewers employ them to test your command of loop logic and the way you convert mathematics arrangements to code. Once you have acquired the solid rectangle, you can progress to variants such as hollow rectangles, half-pyramids, and diagonal patterns.

SEO-Optimized Insight

A "Solid Rectangle pattern program" is a beginner-friendly coding challenge that strengthens understanding of nested loops. By practicing this, learners improve their logic-building skills, which is crucial for solving advanced problems like matrix manipulations, chessboard simulations, and even graphics rendering. Whether in C, C++, Java, or Python, the core logic remains the same, making this a must-learn exercise for coding interviews, college exams, and competitive programming challenges.