基础题型重温—青蛙爬井

#include <stdio.h>

int main() {

int high, up, down,days;

scanf("%d %d %d", &high, &up, &down);

int height = 0;

for(days=1;;days++){

height += up;

if(height>=high){

break;

}

height -= down;

}

printf("%d\n", days);

return 0;

}