程序陷入无限循环

Question

My program is going in infinite loop and does not print required output please help anyone

Answer 1

On the 2nd and subsequent iterations of the outer while loop, space will be initialized with a non-zero value, and then the while(space) loop will keep incrementing space for a long time until it overflows to a negative value, and then keep looping for a long time further until space eventually increments to 0, finally breaking the loop. When an int is evaluated as a boolean, only 0 evaluates as false, all other values evaluate as true. And a 32bit int can hold 4294967296 unique values (-2147483648..2147483647), giving the illusion that your loop is infinite.

Answer 2

while(space)
{
    std::cout << ' ';
    space = space + 1;
}

When space is 1 , this loop will increment i , so it keeps looping. It will loop until space overflow, and increment until space is 0

You probably want:

while(space)
{
    std::cout << ' ';
    --space;
}