Pattern programs in C
Pattern programs in C language, showing how to create various patterns of numbers and stars. The programs require nested loops (a loop inside another loop). A design of numerals, stars, or characters is a way of arranging these in some logical manner, or they may form a sequence. Some of these are triangles that have particular importance in mathematics. Some patterns are symmetrical, while others are not. See the complete page for all of them.
* *** ***** ******* *********
We have shown five rows above; in the program, a user inputs the numbers of rows to print.
Pattern program in C
#include <stdio.h>
int main()
{
int row, c, n;
printf(“Enter the number of rows in pyramid of stars to print\n“);
scanf(“%d”, &n);
for (row = 1; row <= n; row++) // Loop to print rows
{
for (c = 1; c <= n–row; c++) // Loop to print spaces in a row
printf(” “);
for (c = 1; c <= 2*row – 1; c++) // Loop to print stars in a row
printf(“*”);
printf(“\n“);
}
return 0;
}
Consider the following triangle pattern
*
**
***
****
*****
to print above pattern see the code below:
Star pattern in C
#include <stdio.h>
int main()
{
int n, c, k;
printf(“Enter number of rows\n“);
scanf(“%d”, &n);
for (c = 1; c <= n; c++)
{
for(k = 1; k <= c; k++)
printf(“*”);
printf(“\n“);
}
return 0;
}
After understanding these examples, you are in a better position to create your desired pattern. Designing a pattern involves how to use nested loops properly; some of them may include alphabets or other special characters. A critical aspect is knowing how the characters in pattern change.
C pattern programs
Pattern:
* *A* *A*A* *A*A*A*
C pattern program of stars and alphabets:
#include <stdio.h>
int main()
{
int n, c, k;
printf(“Enter number of rows\n“);
scanf(“%d”, &n);
for (c = 1; c <= n; c++)
{
for (k = 1; k <= n–c; k++)
printf(” “);
for (k = 1; k < c; k++)
printf(“*A”);
printf(“*\n“);
}
return 0;
}
Pattern:
1 232 34543 4567654 567898765
C program:
#include <stdio.h>
int main()
{
int n, c, row, t = 1;
scanf(“%d”, &n);
for (row = 1; row <= n; row++) {
for (c = 1; c <= n – row; c++)
printf(” “);
t = row;
for (c = 1; c <= row; c++) {
printf(“%d”, t);
t++;
}
t = t – 2;
for (c = 1 ; c < row; c++) {
printf(“%d”, t);
t–;
}
printf(“\n“);
}
return 0;
}
Pattern:
1 2 4 7 3 5 8 11 6 9 12 14 10 13 15 16
Matrix pattern C program
#include <stdio.h>
int main()
{
int n, p = 1, a[100][100], j, m, k, r;
scanf(“%d”, &r);
for (j = 1; j <= r; j++) {
m = 0;
n = j;
for (k = 1; k <= j; k++)
a[m++][—n] = p++;
}
for (j = 1; j <= r–1; j++) {
m = j;
n = r–1;
for (k = 1; k<= r–j; k++)
a[m++][n—] = p++;
}
for (j = 0; j <= r–1; j++) {
for (k = 0; k <= r–1; k++)
printf(“%d “, a[j][k]);
printf(“\n“);
}
return 0;
}