In this you will be familiarize with the various star pattern, which we can draw by using C programming language with the help of iteration statements and conditional statements.
So let us discuss some sample star patterns along with their code in C language.
Star pattern :
Star Pattern 1.
*
**
***
****
*****
#include <stdio.h> // Header file
int main() // main function
{
// declaration of local variables
int i, j;
// Use of nested for loop which in a iteration statement
for(i=1;i<=5;i++) // for rows
{
for(j=1;j<=i;j++) // for columns
{
printf("*");
}
printf("\n");
}
return 0;
}
Above code uses nested-for iteration statement.
Variable i and j are counter variable and value of these two variables specifies rows and column.
Variable i is initialised with 0 and is incremented by one every time when the loop executes on the condition that i should be less than or equal to 5.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Result of above code after compilation and execution is given as the following :
OUTPUT :
* ** *** **** *****
Star Pattern – 2
*****
****
***
**
*
#include <stdio.h>
int main()
{
int i, j;
for(i=5;i>=1;i--) // for rows
{
for(j=1;j<=i;j++) // for column
{
printf("*");
}
printf("\n");
}
return 0;
}
Above code uses nested-for iteration statement.
Variable i and j are counter variable and value of these two variables specifies rows and column.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Variable i and j are counter variable and value of these two variables specifies rows and column.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Result of above code after compilation and execution is given as the following :
OUTPUT :
***** **** *** ** *
Star Pattern – 3
#include <stdio.h>
int main()
{
int i, j, k;
for(i=5;i>=1;i--) // for rows
{
for(j=1;j<i;j++) // for columns
{
printf(" ");
}
for(k=5;k>=i;k--) // for spacing
{
printf("*");
}
printf("\n");
}
return 0;
}
Above code uses nested-for iteration statement.
Variable i, j and k are counter variable and value of these variables specifies rows,column and spacing respectively.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Variable i, j and k are counter variable and value of these variables specifies rows,column and spacing respectively.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Variable k is initialised with 5 and is decremented by one every time when the loop executes on the condition that k should be greater than or equal to 1.
Result of above code after compilation and execution is given as the following :
OUTPUT :
* ** *** **** *****
Star Pattern – 4
#include <stdio.h>
int main()
{
int i, j, k;
for(i=5;i>=1;i--) // for rows
{
for(j=5;j>i;j--) // for columns
{
printf(" ");
}
for(k=1;k<=i;k++) // for spacing
{
printf("*");
}
printf("\n");
}
return 0;
}
Above code uses nested-for iteration statement.
Variable i, j and k are counter variable and value of these variables specifies rows,column and spacing respectively.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 5 and is decremented by one every time when the loop executes on the condition that j should be greater than i.
Variable i, j and k are counter variable and value of these variables specifies rows,column and spacing respectively.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 5 and is decremented by one every time when the loop executes on the condition that j should be greater than i.
Variable k is initialised with 1 and is incremented by one every time when the loop executes on the condition that k should be less than or equal to i.
Result of above code after compilation and execution is given as the following :
OUTPUT :
***** **** *** ** *
Star Pattern – 5
#include <stdio.h>
int main()
{
int i, j, k;
for(i=1;i<=5;i++) // for rows
{
for(j=i;j<5;j++) // for columns
{
printf(" ");
}
for(k=1;k<(i*2);k++) // for spacing
{
printf("*");
}
printf("\n");
}
return 0;
}
Above code uses nested-for iteration statement.
Variables i, j and k are counter variable and value of these variables specifies rows,column and spacing respectively.
Variable i is initialised with 1 and is incremented by one every time when the loop executes on the condition that i should be less than or equal to 5.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Variable i is initialised with 1 and is incremented by one every time when the loop executes on the condition that i should be less than or equal to 5.
After satisfying this condition, inner loop executes in which variable j is initialised with 1 and is incremented by one every time when the loop executes on the condition that j should be less than or equal to i.
Variable k is initialised with 1 and is incremented by one every time when the loop executes on the condition that k should be less than i multiply by 2.
Result of above code after compilation and execution is given as the following :
OUTPUT :
* *** ***** ******* *********
Star Pattern – 6
#include <stdio.h>
int main()
{
int i, j, k;
for(i=5;i>=1;i--) // for rows
{
for(j=5;j>i;j--) // for columns
{
printf(" ");
}
for(k=1;k<(i*2);k++) // for spacing
{
printf("*");
}
printf("\n");
}
return 0;
}
Variables i, j and k are counter variable and value of these variables specifies rows,column and spacing respectively.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 5 and is decremented by one every time when the loop executes on the condition that j should be greater than i.
Variable i is initialised with 5 and is decremented by one every time when the loop executes on the condition that i should be greater than or equal to 1.
After satisfying this condition, inner loop executes in which variable j is initialised with 5 and is decremented by one every time when the loop executes on the condition that j should be greater than i.
Variable k is initialised with 1 and is incremented by one every time when the loop executes on the condition that k should be less than i multiply by 2.
Result of above code after compilation and execution is given as the following :
OUTPUT :
********* ******* ***** *** *
If you have any doubt please comment below.