Stack overflow C++
c++, callstack, exception, stack-overflow
Solution
This:
int image[W*H];
float dtr[W*H];
Creates each a 4 * 1000 * 1000 ~ 4 MB array into the stack. The stack space is limited, and usually it's less than 4 MB. Don't do that, create the arrays in the heap using new.
int *image = new int[W*H];
float *dtr = new float[W*H];
Problem
This is my code. When I access dtr array in initImg function it gives a stack overflow exception. What might be the reason? ``` #define W 1000 #define H 1000 #define MAX 100000 void initImg(int img[], float dtr[]) { for(int i=0;i<W;i++) for(int j=0;j<H;j++) img[i*W+j]=255; for(int j=0;j<H;j++) { img[j] = 0; img[W*(W-1)+j] = 0; } for(int i=0;i<W;i++) { img[i*W] = 0; img[i*W+H-1] = 0; } for(int i=0;i<W;i++) for(int j=0;j<H;j++) { if(img[i*W+j]==0) dtr[i*W+j] = 0; // <------here else dtr[i*W+j] = MAX; // <------here } } int main() { int image[W*H]; float dtr[W*H]; initImg(image,dtr); return 0; } ```