Star Triangle Program in C using for loop

Write "C"  program to print Triangle in star pattern:

To understand this example, you should have knowledge of the following topics:

·     C if Else Statement

·     C For loop

·      C programming operators

C Star pattern  program using For loop:

#include <stdio.h>
int main()
{
        int i,j,rows;
    printf("Enter a number rows: ");
    scanf("%d",&rows);
    printf("\n"); 
    for (i = 1; i <= rows; i++) 
    { 
            // loop to print the number of spaces before the star 
            for (j = rows; j >= i; j--) 
            { 
                printf(" "); 
            }
            // loop to print the number of stars in each row 
            for (j = 1; j <= i; j++) 
            { 
                printf("* "); 
            }
            printf("\n"); 
            // for new line after printing each row 
        } 
    }

Output:

         *
       *   *
     *   *    *
   *   *    *   *
*   *    *   *    *

Explanation:

• First three integers "i", "j" and "rows"are declared of type int.
• Then in the First for loop “i” value is initialized with a value 1.
• Now “i” value is checked with the condition i < rows that is (rows = User entered value). So the condition is True.
• Now the loop enters into second for loop and checks the condition j >= i. Where "j = rows". and the condition is True.
• Now prints space.
• Now loop enters into third for loop where "j = 1" and checks condition "j <= i"  and prints " * ".
• Print up to third for loop condition becomes False.
• when the value of "i"  becomes "greater than entered value" the program terminates.

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