Print negative as zero

[egruber]

#include <stdio.h>

#define GRAVITY 16

int main(void) {

	int time, altitude, new_alt;
 	
	time=1;
	
	printf("What is the altitude you are dropping your object from?\n");
	scanf("%d", &altitude);
	
	printf("Time	Altitude\n");
		
	// Loop until altitude reaches zero.
  while (new_alt >= 0) {

    // Calculate the new altitude.
    new_alt = altitude-GRAVITY*time*time;

    
	 
	 // Print out the table of time and altitude.
  	 printf("%d		%d\n", time,new_alt);
		
    time++; // Go to the next time value.

  }
  	

  

  return 0;

the last one prints 3 seconds -24 altitude. i need all values below 0 to print as 0. How do I do that?

[OnionKnight]

So, if a value is less than 0 you want it the result to equal 0?

[egruber]

yes.
im pretty sure it has something to do with an if statement but i dont know where to put it.

[OnionKnight]

Before the printf, put

if (new_alt < 0)
    new_alt = 0;

[bithub]

Or if you don't want to change the value of new_alt.

printf("new_alt = %d\n",(new_alt > 0) ? new_alt : 0);