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/**
* C program to print number pattern
*/
#include <stdio.h>
int main()
{
int i, j, k, N;
printf("Enter N: ");
scanf("%d", &N);
for(i=1; i<=N; i++)
{
k = (i * 2) - 1;
// Logic to print spaces
for(j=1; j<i; j++)
{
printf(" ");
}
// Logic to print numbers
for(j=i; j<=N; j++, k+=2)
{
printf("%d", k);
}
printf("\n");
}
return 0;
}13579
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9
13579
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The above pattern is similar to the previous we just printed above except the trailing spaces printed before the numbers. The logic for printing numbers will be similar as first pattern we printed, we only need to add logic of printing spaces. As you can see that each row contains exactly i - 1 spaces (where i is the current row number). You can also hover on to the pattern to see or count total spaces per row.
Step-by-step descriptive logic to print spaces:
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.