白钰铭的第三次作业

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

#include<stdio.h>
int main()
{
	char score;
	scanf("%c",&score);
	switch (score)
	{
		case ‘A‘:
		printf("90~100");
		break;
		case‘B‘:
		printf("80~89");
		break;
		case‘C‘:
		printf("70~79");
		break;
		case ‘D‘:
		printf("60~69");
		break;
		case(‘E‘):
		printf("0~59");
		break;
		
		
	}
}

include<stdio.h> 
int main()
{
    int F=100;
    int C;
    C=(5*(F-32)/9); 
    printf("%d",C);
    return 0;
}

#include<stdio.h>
int main()
{
    int t=2;
    int g=20;
    int H;
    H=0.5*g*t*t;
    printf("f(t)=%d",H);
    return 0;    
} 

#include<stdio.h>
int main()
{
    int a,b,c,d;
    a=152;
    b=a/100;
    c=(a/10)%10;
    d=a%10;
    printf(" 百位%d 十位%d 个位%d",b,c,d);
    return 0;
}

#include<stdio.h>
#include<math.h>
int main()
{
    double x;
    double y;
    scanf("%lf",&x);
    if(x>=0)
    y=sqrt(x);
    else
    y=pow(x+1,2)+2*x+1/x;
    printf("f(x)=%f",y);
} 

#include<stdio.h> 
#include<math.h>
int main()
{
    int year;
    int money;
    double rate;
    double interest;
    printf("请输入存期"); 
    scanf("%d",&year) ;
    printf("请输入存款金额") ;
    scanf("%d",&money);
    printf("年利率");
    scanf("%lf",&rate);
    interest=money*pow(1+rate,year)-money;
    printf("到期利息为%f",interest); 
} 

#include<stdio.h>
int main()
{
    double x;
    double y;
    scanf("%lf",&x);
    if(x<=50)
    y=0.53*x;
    else
    y=0.53*50+(x-50)*0.58;
    printf("f(x)=%f",y);
}

#include<stdio.h>
int main()十行三角形 
{
    printf("*\n");
    printf("* *\n");
    printf("* * *\n");
    printf("* * * *\n");
    printf("* * * * *\n");
    printf("* * * * * *\n");
    printf("* * * * * * *\n");
    printf("* * * * * * * *\n");
    printf("* * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    return 0;
}

#include<stdio.h>
int main()//十行十列矩形 
{
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    printf("* * * * * * * * * *\n");
    return 0;
}