c#练习题2

第一题代码

#include<stdio.h>
int main()
{
  printf("       *\n");
	printf("      *\n");
	printf("     *\n");
	printf("*   *\n");
	printf(" * *\n");
	printf("  *\n");
  return 0;
}

第2题代码

#include<stdio.h>
#define FREEZING (4.0f/3.0f)

int main()
{
	float r = 0;
	r = 10 * 10 * 10;
	float v = 0;
	v = (3.14*FREEZING) * r;
	printf("%f\n", v);
  return 0;
}

第三题了代码

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#define FREEZING (4.0f/3.0f)
int main()
{
	int r = 0;
	scanf("%d", &r);
	float v = 0;
	v = (3.14 * FREEZING) * r * r * r;
	printf("%f\n", v);
return 0;
}

第4题代码

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#define FREEZING (4.0f/3.0f)
int main()
{
	float m;
	scanf("%f", &m);
	float s;
	s = m + m * 0.05;
	printf("Enter an amount: %f\n", m);
	printf("With tax added; %f\n", s);
  return 0；
  }

第五题代码

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#define FREEZING (4.0f/3.0f)
int main()
{
	float x;
	scanf("%f", &x);
	float z;
	z = 3 * (x * x * x * x * x) + 2 * (x * x * x * x) - 5 * (x * x * x) - x * x + 7 * x - 6;
	printf("%f", z);
  return 0;
}