how we can print a number triangle?

Question

like this 1 with input 10.
2 3
4 5 6
7 8 9 10

Answer 1

Yaa ... Eddy M you are right, I'm sorry for it. It happened because of my misunderstanding.

Answer 2

You can use for or while loop for it.

for (i = 1; i <= 10; ++i) {
printf(" ");
for (j = 1; j <= i; ++j) {
printf("%d ", i);
}
printf("\n");
}

Answer 3

@axita I think your code would print 10 rows made up of identical numbers. Probably it's not necessary to write the code for arbitrary input so the number of spaces printed first need to descend from 3 on first row to 0 on the 4th.

Answer 4

@reza let us see your attempt

Answer 5

Try to understand this code and then write your own version. I used "-" instead of " " to align better in Code PlayGround.
It only prints 10 numbers now, as in your sample output. Can you generalize it?

#include <stdio.h>

int main() {
int n = 0;
for (int i = 1; i <= 4; ++i) {
for (int j = 4-i; j>0; j--) {
printf("-");
}
for (int j = 1; j <= i; ++j) {
n++;
printf("%d ", n);
}
printf("\n");
}
return 0;
}

Answer 6

hey guys thanks for your help
@axita but i want an output like this
1
2 3
4 5 6
7 8 9 10

Answer 7

hey @Eddy
ok this is my code but i think it has many problems

#include <stdio.h>
int main()
{
int x;
scanf("%d",&x);
int i,j;
for(i=1;i<=x/2;i++)
{
for(j=1;j<=x-i;j++)
{
printf(" ");
}
for(j=i+1;j<2*i+1;j++)
{
printf("%d ",j);
}
printf("\n");
}
return 0;
}