C program to print square or rectangle star pattern 
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C Programming Language / Loop control in C Language

3244

Program:

/**
 * C program to print rectangle star pattern
 */

#include <stdio.h>

int main()
{
    int i, j, rows, columns;

    /* Input rows and columns from user */
    printf("Enter number of rows: ");
    scanf("%d", &rows);
    printf("Enter number of columns: ");
    scanf("%d", &columns);

    /* Iterate through each row */
    for(i=1; i<=rows; i++)
    {
        /* Iterate through each column */
        for(j=1; j<=columns; j++)
        {
            /* For each column print star */
            printf("*");
        }
        
        /* Move to the next line/row */
        printf("\n");
    }

    return 0;
}

Output:

Enter number of rows: 5
Enter number of columns: 10
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Explanation:

Step by step descriptive logic to print rectangle star pattern.

  1. Input number of rows and columns from user. Store it in a variable say rows and columns.
  2. To iterate through rows, run an outer loop from 1 to rows. Define a loop with structure for(i=1; i<=rows; i++).
  3. To iterate through columns, run an inner loop from 1 to columns. Define a loop with structure for(j=1; j<=columns; j++).
  4. Inside inner loop print star *.
  5. After printing all columns of a row. Move to next line i.e. print a new line.

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