Q. Write a C program to print the following alternate number-star pyramid/triangle as:
1
2*2
3*3*3
4*4*4*4
4*4*4*4
3*3*3
2*2
1
Ans.
/*c program for alternate number-star pyramid*/
#include<stdio.h>
int main()
{
int num,r,c,z=1,p,n;
printf("Enter maximum number : ");
scanf("%d", &num);
for(r=1; r<=num; r++,z=z+2)
{
for(c=1; c<=z; c++)
{
if(c%2==0)
printf("*");
else
printf("%d",r);
}
printf("\n");
}
n=num+3;
/*
NOTE: increase +1 above digit when you increase maximum number to 4
For example: if you enter:
num=5 then n=num+4
if num=6 then n=num+5 and so on.
*/
p=num;
for(r=num; r>=1; r--,n=n-2,p--)
{
for(c=1; c<=n; c++)
{
if(c%2==0)
printf("*");
else
printf("%d",p);
}
printf("\n");
}
getch();
return 0;
}
The output of above program would be:
1
2*2
3*3*3
4*4*4*4
4*4*4*4
3*3*3
2*2
1
Ans.
/*c program for alternate number-star pyramid*/
#include<stdio.h>
int main()
{
int num,r,c,z=1,p,n;
printf("Enter maximum number : ");
scanf("%d", &num);
for(r=1; r<=num; r++,z=z+2)
{
for(c=1; c<=z; c++)
{
if(c%2==0)
printf("*");
else
printf("%d",r);
}
printf("\n");
}
n=num+3;
/*
NOTE: increase +1 above digit when you increase maximum number to 4
For example: if you enter:
num=5 then n=num+4
if num=6 then n=num+5 and so on.
*/
p=num;
for(r=num; r>=1; r--,n=n-2,p--)
{
for(c=1; c<=n; c++)
{
if(c%2==0)
printf("*");
else
printf("%d",p);
}
printf("\n");
}
getch();
return 0;
}
The output of above program would be:
Figure : Screen shot for Alternate Number-Star Triangle C program |
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