Few programs on pattern using C language are posted here.
Pattern number 1:
1
1 2 3
1 2 3 4 5
#include < stdio.h>
void main()
{
int i,j,x;
clrscr();
for(i=0;i<3;i++)
{
x=1;
for(j=0;j< i*2+1;j++)
{
printf("%d",x++);
}
printf("\n");
}
getch();
}
Pattern number 2:
1234
123
12
1
#include < stdio.h>
void main()
{
int i,j,x;
clrscr();
for(i=0;i<4;i++)
{
x=1;
for(j=0;j<4-i;j++)
{
printf("%d",x++);
}
printf("\n");
}
getch();
}
Pattern number 3:
Another pattern as follows, here ‘*’ indicates blank space.
****1
***12
**123
*1234
12345
#include < stdio.h>
void main()
{
int i,j,k,x;
clrscr();
for(i=0;i<5;i++)
{
x=1;
for(k=i;k<4;k++)
printf(" ");
for(j=0;j<=i;j++)
{
printf("%d",x++);
}
printf("\n");
}
getch();
}
Pattern number 4:
Next pattern is like:
5
54
543
5432
54321
#include < stdio.h>
void main()
{
int i,j,x;
clrscr();
for(i=0;i<5;i++)
{
x=5;
for(j=0;j<=i;j++)
{
printf("%d",x--);
}
printf("\n");
}
getch();
}
Pattern number 5:
Pattern printing the numbers 1 2 2 3 3 4 4 5 5 as inverted ‘V’, like:
#include < stdio.h>
void main()
{
int i,j,k,x=1,y=1;
clrscr();
for(i=0;i<5;i++)
{
for(k=i;k<5;k++)
printf(" ");
for(j=0;j< y;j++)
{
if(j==0||j==y-1)
printf("%d",x);
else
printf(" ");
}
y=y+2;
x++;
printf("\n");
}
getch();
}