#include <iostream>
#include <cstdio>
using namespace std;
int main()
{
    for(int i=-100;i<=150;i+=5)
    {
        cout<<"c="<<i<<"->f="<<i*9/5+32<<endl;
    }
    return 0;
}

#include<stdio.h>
int ctof(int c)
{
int f;
    f=32+ c*9/5;
	return f;	
}
int main()
{
	int c,f;
	for(c=-100;c<=150;c=c+5)
	{
		printf("c=%d->f=%d\n",c,ctof(c));
	}
	return 0;
	
}