#include void program_info(); void miles_to_kms(double miles); void gallons_to_liters(double gallons); int main() { double gallons,miles; char answer; answer='y'; while (answer=='y') { program_info(); printf("How many gallons of gasoline?----->"); scanf("%lf",&gallons); printf("How many miles the car delivered?->"); scanf("%lf",&miles); miles_to_kms(double miles); gallons_to_liters(double gallons); printf("Would you like to continue-y/n.->"); getchar(); scanf("%c",&answer); } return 0; } void program_info() { printf("It can compute a gallon to liter."); printf("It can compute a mile to kilometer."); } void miles_to_kms(double miles) { miles=miles*1.60935; printf("It has %1lf kilometers.",miles); } void gallons_to_liters(double gallons) { gallons=gallons*3.78531; printf("It has %1lf liters",gallons); } 這個程式主要是要算gallons換算成liters~miles換算成kilometers~ 我要把我主程式所輸入的gallons跟miles,把它放到副程式裡運算在print出來,可是我不大會做,求助各位大大幫一下小弟修改~真的是感機不盡 發表人 - tai1688 於 2005/03/26 11:34:57

Hello tai1688,    原本程式不是已經運算後再print出來了嗎? 不曉得你想怎麼做? PS.我並沒有check你的公式對不對.    底下為簡單修改之後的情形.

#include 
void program_info(void);
void miles_to_kms(double miles);
void gallons_to_liters(double gallons);
int main()
{
  double gallons,miles;
  char answer;      answer='y';
  while (answer=='y')
  {
  program_info();
  printf("How many gallons of gasoline?----->");
  scanf("%lf",&gallons);
  printf("How many miles the car delivered?->");
  scanf("%lf",&miles);
  miles_to_kms(miles);
  gallons_to_liters(gallons);
  printf("Would you like to continue-y/n.->");
  getchar();
  scanf("%c",&answer);
  }
  return 0;
}    void program_info(void)
{
  printf("It can compute a gallon to liter.\n");
  printf("It can compute a mile to kilometer.\n");
}
void miles_to_kms(double miles)
{
  miles=miles*1.60935;
  printf("It has %1lf kilometers.\n",miles);
}
void gallons_to_liters(double gallons)
{
  gallons=gallons*3.78531;
  printf("It has %1lf liters\n",gallons);
}

發表人 - nlj859 於 2005/03/26 11:37:06

感謝這位大大~因為我第一次寫副程式,所以不大會做