cpp/CPrimerPlus6E/Ch06/for_geo.c

/* for_geo.c */
#include <stdio.h>
int main(void)
{
    double debt;
    
    for (debt = 100.0; debt < 150.0; debt = debt * 1.1)
        printf("Your debt is now $%.2f.\n", debt);
    return 0;
}