In this article we will show you, How to write a C Program to Print Right Angled Triangle Star Pattern with example. And also show you, How to print Right Angled Triangle Pattern with different symbols.
C Program to Print Right Angled Triangle Star Pattern
This C program allows the user to enter the maximum number of rows he/she want to print as Right Angled Triangle. We are going to print the Right Angled Triangle of * symbols until it reaches the user specified rows.
CODE
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/* C Program to Print Right Angled Triangle Star Pattern */ #include <stdio.h> int main() { int Rows, i, j; printf("Please Enter the Number of Rows: "); scanf("%d", &Rows); printf("\nPrinting Right Angled Triangle \n \n"); for ( i = 1 ; i <= Rows; i++ ) { for ( j = 1 ; j <= i; j++ ) { printf("* "); } 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 <= i; j++ ) { printf("* "); } printf("\n"); } |
Outer Loop – First Iteration
From the above screenshot you can observe that, The value of i is 1 and Rows is 7 so, 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 (j <= 1) is True. So, it will start executing the statements inside the loop. Following statement will print * as Output
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printf("* "); |
Following statement will increment the Value of Number 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 Right Angled Triangle Star Pattern
This program allows the user to enter the Symbol, and number of rows he/she want to print.
CODE
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/* C Program to Print Right Angled Triangle Star Pattern */ #include <stdio.h> int main() { int Rows, i, j; char Ch; printf("Please Enter any Symbol\n"); scanf("%c", &Ch); printf("Please Enter the Number of Rows: "); scanf("%d", &Rows); printf("\nPrinting Right Angled Triangle \n \n"); for ( i = 1 ; i <= Rows; i++ ) { for ( j = 1 ; j <= i; j++ ) { printf("%c", Ch); } printf("\n"); } return 0; } |
OUTPUT
C Program to Print Right Angled Triangle Star Pattern using While Loop
In this C program we just replaced the For Loop with the While Loop. I suggest you to refer While Loop article to understand the logic.
CODE
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/* C Program to Print Right Angled Triangle Pattern */ #include <stdio.h> int main() { int Rows, i = 1, j; char Ch; printf("Please Enter any Symbol\n"); scanf("%c", &Ch); printf("Please Enter the Number of Rows: "); scanf("%d", &Rows); printf("\nPrinting Right Angled Triangle \n \n"); while ( i <= Rows) { for ( j = 1 ; j <= i; j++ ) { printf("%c", Ch); } printf("\n"); i++; } return 0; } |
OUTPUT
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