Code written in C compiles but throws an error while running?

Question

C++ / C#

The code written in C throws an error when I enter a number into the terminal
Here is the code itself:

#include <stdio.h>
#include <cs50.h>
int main(void) 
{
    int monets=0;
    int tf = 25;
    int t = 10;
    int f = 5;
    int o = 1;
    printf("O hai! How much change is owed?\n");
    float changeFloat = get_float();
    while (changeFloat<0) 
    {
        printf("O hai! How much change is owed?\n");
        changeFloat = get_float();
    }
    int change = changeFloat*100;
    
    while (tf<=change) {
        monets++;
    }
    while (t<=change) {
        monets++;
    }
    while (f<=change) {
        monets++;
    }
    while (o<=change) {
        monets++;
    }
    printf("%i\n", monets);
    
}

In the terminal it gives this: greedy.c
:23:15: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
, please tell me what's the matter?

Answer 1

All your whiles run forever, you don't change tf, t, f, o, so the value of monets goes beyond the allowable signed integer type (2147483647).