Walter Blyss的部落格

第一題:

#include <stdio.h>

void odd_even(int a)
{
  if((a%2) == 0)
    printf("An even number.\n");
  else
    printf("An odd number.\n");
}

int main()
{
  int x;
  printf("Please Input A Number:");
  scanf("%d", &x);
  odd_even(x);
 
  return 0;
}

第二題:

#include <stdio.h>

int Remainder(int a)
{
  int rem;
  if( a >= 5)
    rem = a % 5;
  else
  {
    printf("Must Greater Than 5, Thanks.");
    return -1;
  }
  return rem;
}

int main()
{
  int x;
  printf("Please Input A Number:(Must Greater Than 5)");
  scanf("%d", &x);
  printf("Remainder is %d\n", Remainder(x));
 
  return 0;
}

第三題:

#include <stdio.h>

int Add(int a, int b)
{
  int sum = 0;
  sum = a + b;
  printf("Sum is %d\n", sum);
  return 0;
}

int Divided(int a, int b)
{
  int quotient, surplus;
  if(a >= b)
  {
    quotient = a / b;
    surplus = a % b;
    printf("Quotient is %d\n", quotient);
    printf("Surplus is %d\n", surplus);
  }
  else
  {
    quotient = b / b;
    surplus = b % a;
    printf("Quotient is %d\n", quotient);
    printf("Surplus is %d\n", surplus);
  }
  return 0;
}

int Trapezoid(double a, double b, double c)
{
  double superficial;
  superficial = ((a + b) * c) / 2.0;
  printf("Superficial is %lf\n", superficial);
  return 0;
}

int main()
{
  int x = 0, output, number1, number2;
  double a, b, c;
  do
  {
    printf("=========================\n");
    printf("Please Input Your Choise:\n");
    printf("1.Add Two Number.\n");
    printf("2.Quotient Of  Two Number.\n");
    printf("3.Trapezoid Superficial.\n");
    printf("4.Quit.\n");
    printf("=========================\n");
    scanf("%d", &x);
    switch(x)
    {
      case 1:
        printf("Please Input Two Number:");
        scanf("%d %d", &number1, &number2);
        output = Add(number1, number2);
        break;
      case 2:
        printf("Please Input Two Number:");
        scanf("%d %d", &number1, &number2);
        output = Divided(number1, number2);
        break;
      case 3:
        printf("Please Input Three Number:(Bottom, Under Bottom, Height)");
        scanf("%lf %lf %lf", &a, &b, &c);
        output = Trapezoid(a, b, c);
        break;
      case 4:
        output = -1;
        printf("Bye Bye\n");
        break;
    }
  }while(output == 0);
   
  return 0;
}

第四題:

#include <stdio.h>

int Add(int a, int b)
{
  int sum = 0;
  sum = a + b;
  printf("Sum is %d\n", sum);
  return 0;
}

int main()
{
  int x, y;
  printf("Please Input Two Number:");
  scanf("%d %d", &x, &y);
  Add(x, y);
   
  return 0;
}

第五題:

#include <stdio.h>

void Add(double a, double b)
{
  printf("Sum is %lf\n", (a + b));
}

int main()
{
  double x, y;
  printf("Please Input Two Number:");
  scanf("%lf %lf", &x, &y);
  Add(x, y);
   
  return 0;
}