Jump to content
  • Advertisement
Sign in to follow this  
BlueBan007

2D arrays question ??

This topic is 3369 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

sorry if this is a stupid question, but I'm testing out some arrays stuff, and I received this error: Run-Time Check Failure #2 - Stack around the variable 'array1' was corrupted. this is the code:

#include <iostream>

using namespace std;

int main(int argc, char *argv[]){

	int array1[5][5];
	int puts=1;

		for(int i=1;i<=5;i++){
		for(int j=1;j<=5;j++){
			
			array1[j]=puts;
			cout<<array1[j]<<"\t";
			puts++;

		}
		cout<<endl;
		}

system("pause");
return 0;
}

Share this post


Link to post
Share on other sites
Advertisement
Arrays in programming are (almost?) always 0 based. That is, the first item is at [0] not at [1]


for(int i=1;i<=5;i++) {
for(int j=1;j<=5;j++) {



should be


for(int i=0;i<5;i++) {
for(int j=0;j<5;j++) {



-me

Share this post


Link to post
Share on other sites
Quote:
Original post by Palidine
for(int i=0;i<5;i++) {
for(int j=0;j<5;j++) {


You just made it have six terms. It should only be five.
the way it should be put:

for(int i=0;i<4;i++) {
for(int j=0;j<4;j++) {





Share this post


Link to post
Share on other sites
@X19OV1: Palidine's code is fine, it runs from 0 to 4 (not 5, because 5 is not lower than 5, so the loop will bail out there). Your code only runs up to 3.

Share this post


Link to post
Share on other sites
Quote:
Original post by Captain P
Your code only runs up to 3.


How does my code only run up to 3?

Share this post


Link to post
Share on other sites
Try it. Look at the output:

#include <iostream>
int main(int, char **) {
for(int j=0;j<4;j++) std::cout << j << std::endl;
}


Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!