#include <stdio.h>#include <stdlib.h>/* run this program using the console pauser or add your own getch, system("pause") or input loop */int main(int argc, char *argv[]) {    int i;    int fahr,celsius;    int lower,upper,step;    lower = 0;//温度表的下限     upper = 300;//温度表的上限     step = 20;//步长        fahr = lower;     while(fahr<=upper){         celsius = 5 *(fahr-32)/9;         printf("%d\t%d\n",fahr,celsius);         fahr=fahr+step;    }     scanf("%s",&i);    return 0;    }