作业3 袁韬淳160809310 

#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()
{
  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() 
{
    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;
    printf("DACHULAI");
    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;                                    
    }
    return 0;
}

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

#include<stdio.h>
int main()
{
    int                     g=10;
    int                            t=3;
    int                      h=0.5*g*t*t;

    printf("h=%d",h);
    return 0; 

}

#include<stdio.h>
int main()

{
    int x=152;
    int a=x/100;
    int b=x%100/10;
    int c=x%10;
    printf("百位=%d,十位=%d,个位=%d",a,b,c);
    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)=%lf",y);
}

#include<stdio.h>
#include<math.h>
int main()
{
    double  money;
      double  year;    
    double  rate;
      double interest;
    double a;
       scanf("%lf  %lf   %lf",&money, &year,&rate);
    a=pow(1+rate,year);
    interest=money*a-money; 
    printf     ("interest=%lf",interest);
    return 0;
}

#include <stdio.h>
int main()//   电 
{
   int c ;
      double f;
      scanf("%d",&c);
   if(c<=50)
     {f=0.53*c;}
   else
     {f=50*0.53+(c-50)*0.05;}
   printf("费用:%lf",f);
   return 0;
}