Introduction to Patterns in C Programming
Patterns in C Programming, C is the procedural, general-purpose programming language. It was first created between 1969 and 1973 by Dennis Ritchie. Low-level access to memory, a simple set of keywords, and eas implementation are the main features of the C language. There are many languages like PHP, Java, Javascript, etc. follows features or syntax of C to some extent.
The Basic Structure of the C Language is given as follows
Header #include<stdio.h>
Main(): int main()
{
Variable Declaration: int x=12;
Body: printf(“%d”,x);
Return: return 0;
}
Examples of Patterns in C Programming
There are various patterns in C language like star pattern, number patterns, and character patterns. In this section, we are going to discussed how to create different patterns in C language with the help examples.
1. Number Patterns
In this section, we are going to see how to print different number patterns in C language
Example 1: Program in C to print the number pyramid pattern
In the following C program, the user can provide the number of rows to print the number pyramid pattern as he wants, the result will be displayed on the screen:
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#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y, k;
printf("Enter the number of rows to show number pattern: ");
scanf("%d",&n);
for(x =1; x <= n; x++)
{
for(y =1; y <= n; y++)
{
if(y <= x)
printf("%d",y);
else
printf(" ");
}
for(y = n; y >= 1;y--)
{
if(y <= x)
printf("%d",y);
else
printf(" ");
}
printf("\n");
}
return 0;
}
Output:
Example2: Program in C to print the Number Diamond Pattern
In the following C program, the user can provide the number of rows to print the diamond pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y, k;
printf("Enter the number of rows to show number paatern: ");
scanf("%d",&n);
for(x = 1; x <= n; x++)
{
for(y = x; y <n; y++)
{
printf(" ");
}
for(k = 1; k < (x*2); k++)
{
printf("%d",k);
}
printf("\n");
}
for(x = 4; x >= 1; x--)
{
for(y = n; y > x; y--)
{
printf(" ");
}
for(k = 1; k < (x*2); k++)
{
printf("%d",k);
}
printf("\n");
}
return 0;
}
Output:
Example 3: Program in C to print the number pyramid pattern
In the following C program, the user can provide the number of rows to print the number pyramid pattern as he wants, the result will be displayed on the screen:
#include<stdio.h>
#include<conio.h>
int main()
{
int x, s, n, y = 0, cntr = 0, cntr1 = 0;
printf("Enter the number of rows to show number pattern: ");
scanf("%d",&n);
for(x = 1; x <= n; ++x)
{
for(s = 1; s <= n-x; ++s)
{
printf(" ");
++cntr;
}
while(y != 2 * x - 1)
{
if (cntr <= n - 1)
{
printf("%d ", x + y);
++cntr;
}
else
{
++cntr1;
printf("%d ", (x + y - 2 * cntr1));
}
++y;
}
cntr1 = cntr = y = 0;
printf("\n");
}
return 0;
}
Output:
Example 4: Program in C to print the vertical number pyramid pattern
In the following C program, the user can provide the number of rows to print the vertical number pyramid pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y;
printf("Enter the number of rows to show number pattern: ");
scanf("%d",&n);
for(int x = 1; x < n; x++)
{
for(int y = 1; y <= x; y++)
printf("%d",y);
printf("\n");
}
for(int x = n; x >= 0; x--)
{
for(int y = 1; y <= x; y++)
printf("%d",y);
printf("\n");
}
return 0;
}
Output:
Example 5: Program in C to print the number pyramid pattern
In the following C program, the user can provide the number of rows to print the number pyramid pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y;
printf("Enter the number of rows to show number patterns: ");
scanf("%d",&n);
for (int x = n; x >= 0; x--)
{
for (int y = 1; y <= x; y++)
printf("%d",y);
printf("\n");
}
for(int x = 1; x <= n; x++)
{
for(int y = 1; y <= x; y++)
printf("%d",y);
printf("\n");
}
return 0;
}
Output:
2. Star Patterns
In this section, we are going to see how to print different Star patterns in C language
Example 1: Program in C to print the Star Diamond Pattern
In the following C program, the user can provide the number of rows to print the Star Diamond pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, s, x, y;
printf("Enter number of rows to show star pattern: ");
scanf("%d",&n);
for(x = 0; x <= n; x++)
{
for(s = n; s > x; s--)
printf(" ");
for(y = 0; y < x; y++)
printf("* ");
printf("\n");
}
for(x = 1; x < n; x++)
{
for(s = 0; s < x; s++)
printf(" ");
for(y = n; y > x; y--)
printf("* ");
printf("\n");
}
return 0;
}
Output:
Example 2: Program in C to print the Vertical Curve Pattern
In the following C program, the user can provide the number of rows to print the Vertical Curve pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x , y;
printf("Enter number of rows to show star pattern: ");
scanf("%d",&n);
for(x = 1; x <= n; x++)
{
for(y = 1; y <= x; y++)
{
printf("*");
}
printf("\n");
}
for(x = n; x >= 1; x--)
{
for(y = 1; y <= x; y++)
{
printf( "*");
}
// ending line after each row
printf("\n");
}
return 0;
}
Output:
Example 3: Program in C to print the Hollow Number Diamond Pattern
In the following C program, the user can provide the number of rows to print the hollow diamond pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
printf("Enter the number of rows to show the star pattern: ");
int n, x, y, s = 1, k;
scanf("%d",&n);
for(x = 0; x <= n; x++)
{
for(y = n; y > x; y--)
{
printf(" ");
}
printf("*");
if (x > 0)
{
for(k = 1; k <= s; k++)
{
printf(" ");
}
s += 2;
printf("*");
}
printf("\n");
}
s -= 4;
for(x = 0; x <= n -1; x++)
{
for(y = 0; y <= x; y++)
{
printf(" ");
}
printf("*");
for(k = 1; k <= s; k++)
{
printf(" ");
}
s -= 2;
if(x != n -1)
{
printf ("*");
}
//ending line after each row
printf("\n");
}
return 0;
}
Output:
Example 4: Program in C to print the Hollow Star Triangle Pattern
In the following C program, the user can provide the number of rows to print the Hollow Star Triangle pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y, s;
printf("Enter number of rows to show the star pattern: ");
scanf("%d",&n);
for(x = 1; x <= n; x++)
{
//for loop to put space in pyramid
for (s = x; s < n; s++)
printf(" "); //for loop to print star
for(y = 1; y <= (2 * n - 1); y++)
{
if(x == n || y == 1 || y == 2 * x - 1)
printf("*");
else
printf(" ");
}
//ending line after each row
printf("\n");
}
return 0;
}
Output:
Example 5: Program in C to print the Star Triangle Pattern
In the following C program, the user can provide the number of rows to print the Star Triangle pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, s, x, y;
printf("Enter number of rows to show star pattern: ");
scanf("%d",&n);
for(x = 1; x <= n; x++)
{
//for loop to put space
for(s = x; s < n; s++)
printf(" ");
//for loop for displaying star
for(y = 1; y <= x; y++)
printf("* ");
// ending line after each row
printf("\n");
}
return 0;
}
Output:
3. Character Patterns
In this section, we are going to see how to print different character patterns in C language
Example 1: Program in C to print the Consecutive Characters’ Triangle Pattern
In the following C program, the user can provide the number of rows to print the Consecutive Characters’ Triangle Triangle pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y;
printf("Enter number of rows to show character pattern: ");
scanf("%d",&n);
for(x = 1; x <= n; x++)
{
for(y = 1; y <= x; y++)
{
printf("%c",'A' + y -1);
}
printf("\n");
}
return 0;
}
Output:
Example 2: Program in C to print the Characters’ Triangle Pattern
In the following C program, the user can provide the number of rows to print the Characters’ Triangle Triangle pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y;
printf("Enter number of rows to show character pattern: ");
scanf("%d",&n);
for(x = 1; x <= n; x++)
{
for(y = 1; y <= x; y++)
{
printf("%c",'A'-1 + x);
}
printf("\n");
}
return 0;
}
Output:
Example 3: Program in C to print the Characters’ Inverted Triangle Pattern
In the following C program, the user can provide the number of rows to print the Characters’ Inverted Triangle pattern as he wants, the result will be displayed on the screen
#include<stdio.h>
#include<conio.h>
int main()
{
int n, x, y;
printf("Enter number of rows to show character pattern: ");
scanf("%d",&n);
for(x= 1; x <= n; x++)
{
for(y = n; y >= x; y--)
{
printf("%c",'A'-1 + x);
}
printf("\n");
}
return 0;
}
Output:
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This has been a guide to Patterns in C Programming. Here we discuss different numbers, stars and character’s Patterns with examples. You can also go through our other suggested articles to learn more –
