In this article we will show you, How to write a C program to Print Number Pattern 1 with example. Or, C Program to Print Rectangle Number Pattern.
C program to Print Number Pattern 1 using For Loop
This program allows the user to enter the maximum number of rows and columns he/she want to print as a rectangle. Next, compiler will print the numbers from 1 to user specified rows.
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/* C program to Print Number Pattern 1 */ #include<stdio.h> int main() { int i, j, rows, columns; printf(" \nPlease Enter the Number of Rows : "); scanf("%d", &rows); printf(" \nPlease Enter the Number of Columns : "); scanf("%d", &columns); for(i = 1; i <= rows; i++) { for(j = 1; j <= columns; j++) { printf("%d", i); } printf("\n"); } return 0; } |
OUTPUT
ANALYSIS
Let us see the Nested for loop
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for(i = 1; i <= rows; i++) { for(j = 1; j <= columns; j++) { printf("%d", i); } printf("\n"); } |
Outer Loop – First Iteration
From the above screenshot you can observe that, The value of i is 7 and the condition (i <= 7) is True. So, it will enter into second for loop
Inner Loop – First Iteration
The j value is 1 and the condition (1 <= 9) is True. So, it will start executing the statements inside the loop.
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printf(" %d", i); |
Following statement will be incremented by 1 using the Increment Operator
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j++ |
This will happen until the condition inside the inner for loop fails. Next, iteration will start from beginning until both the Inner Loop and Outer loop conditions fails.
C program to Print Number Pattern 1 using while Loop
In this program we just replaced the For Loop with the While Loop. I suggest you to refer While Loop article to understand the logic.
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/* C program to Print Number Pattern 1 */ #include<stdio.h> int main() { int i, j, rows, columns; i = 1; printf(" \nPlease Enter the Number of Rows : "); scanf("%d", &rows); printf(" \nPlease Enter the Number of Columns : "); scanf("%d", &columns); while(i <= rows) { j = 1; while(j <= columns) { printf("%d", i); j++; } i++; printf("\n"); } return 0; } |
OUTPUT
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