Star Patterns
C program to print right triangle star pattern
Write a C program to print right triangle star pattern series using for loop. How to print right triangle star pattern series of n rows in C programming. Logic to print right triangle star pattern in C.
Required knowledge
Operators, Data Types in c, Variables in C, Basic input/output, C if-else, C Loops
Logic to print right triangle star pattern
* ** *** **** *****
If you look at the pattern carefully you will find that stars are in increasing order of rows (i.e. 1 star in first row, followed by 2 stars in second and so on).
Step by step descriptive logic to print right triangle star pattern.
Input number of rows to print from user. Store it in a variable say N.
To iterate through rows run an outer loop from 1 to N with loop structure for(i=1; i<=N; i++).
To iterate through columns run an inner loop from 1 to i with loop structure for(j=1; j<=i; j++). Inside the inner loop print star.
After printing all columns of a row move to next line i.e. print new line.
Program to print right triangle star pattern
/* * C program to print right triangle star pattern series */ #include <stdio.h> int main() { int i, j, n; /* Input number of rows from user */ printf("Enter value of n: "); scanf("%d", &n); for(i=1; i<=n; i++) { /* Print i number of stars */ for(j=1; j<=i; j++) { printf("*"); } /* Move to next line */ printf("\n"); } return 0; }
Output:
Enter the value of n: 5 * ** *** **** *****