12345
1234
123
12
1
/**
* C program to print number pattern
*/
#include <stdio.h>
int main()
{
int i, j, N;
printf("Enter N: ");
scanf("%d", &N);
for(i=1; i<=N; i++)
{
// Logic to print spaces
for(j=1; j<i; j++)
{
printf(" ");
}
// Logic to print numbers
for(j=1; j<=N-i+1; j++)
{
printf("%d", j);
}
printf("\n");
}
return 0;
}12345
1234
123
12
1
12345
1234
123
12
1
Once you got the logic of previous number pattern that we just printed, you can easily get the logic of this pattern. As it is almost similar to the first number pattern expect that it contains trailing spaces. Hence we only need to add the logic of printing trailing spaces to the first number pattern program.
To get the logic of this pattern just hover your mouse on the above pattern to see or count total spaces per row. There are total i - 1 spaces per row (where i is the current row number).
The step-by-step descriptive logic to print space:
Only this much you need to do. Lets implement this on code.
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.