C Exercises: Display the pattern like right angle triangle which repeat a number in a row
11. Right Angle Triangle with Repeated Number per Row
Write a program in C to make such a pattern like a right angle triangle with a number which will repeat a number in a row.
The pattern is as follows:
1 22 333 4444
This C program creates a right-angle triangle pattern where each row displays a repetition of the row number. The pattern starts with a single digit in the first row and increases with each subsequent row. The program utilizes nested "for" loops to control the number of rows and repetitions of each digit, producing the desired pattern.
Visual Presentation:
Sample Solution:
C Code:
#include <stdio.h> // Include the standard input/output header file.
void main() {
int i, j, rows; // Declare variables 'i' and 'j' for loop counters, 'rows' for user input.
printf("Input number of rows : "); // Print a message to prompt user input.
scanf("%d", &rows); // Read the value of 'rows' from the user.
for (i = 1; i <= rows; i++) { // Start a loop to generate rows.
for (j = 1; j <= i; j++) // Nested loop to print numbers based on the current row.
printf("%d", i); // Print the value of 'i'.
printf("\n"); // Move to the next line for the next row.
}
}
Output:
Input number of rows : 10 1 22 333 4444 55555 666666 7777777 88888888 999999999 10101010101010101010
Explanation:
for (i = 1; i <= rows; i++) {
for (j = 1; j <= i; j++)
printf("%d", i);
printf("\n");
}
In the said for loop, the variable i is initialized to 1, and the loop will continue as long as i is less than or equal to the value of variable 'rows'. In each iteration of the outer loop, another loop is started with variable j, initialized to 1, and it will continue as long as j is less than or equal to the value of i.
In each iteration of the inner loop, the printf() function will print the value of j to the console. This value will be printed j times, as the value of j is increasing by 1 in each iteration of the inner loop.
After the inner loop completes, the outer loop will print a newline character (\n) to create a new line.
The outer loop will increment the value of i by 1, and the process will repeat until the condition i<=rows is no longer true.
Flowchart:
For more Practice: Solve these Related Problems:
- Write a C program to print a triangle where each row consists of the row number repeated and then display the sum of each row.
- Write a C program to print a triangle pattern with the same number repeated, alternating the order for even and odd rows.
- Write a C program to display a triangle with repeated numbers using recursion.
- Write a C program to generate a triangle of repeated numbers and then output the total sum of all numbers printed.
C Programming Code Editor:
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