一#include<stdio.h>main(){inta,b;a=365;b=7;printf(“%d，%d\n”,a/b,a%b);}二#include<stdio.h>main(){inta,b;floatx,y;charc1,c2;scanf(“%d%d%f%f%c%c”,&a,&b,&x,&y,&c1,&c2);printf(“%d,%d,%f,%f,%c,%c”,a,b,x,y,c1,c2);}#include<stdio.h>#include<math.h>main(){floata,b,c,disc,x1,x2,p,q;scanf(“a=%f,b=%f,c=%f”,&a,&b,&c);disc=b*b-4*a*c;p=-b/(2*a);q=sqrt(disc)/(2*a);x1=p+q;x2=p-q;printf(“x1=%5.2f\nx2=%5.2f\n”,x1,x2);}三#include<stdio.h>voidmain(){inta,b;scanf(“%d”,&a);if(a<60)printf(“E”);else{b=a/10;switch(b){case10:case9:printf(“A\n”);break;case8:printf(“B\n”);break;case7:printf(“C\n”);break;case6:printf(“D\n”);break;default：printf(“error\n”);}}}#include<stdio.h>#include<math.h>#defineEXP2.71828voidmain(){floatx,y;scanf(“%f”,&x);if(x>0)y=2*x-EXP*EXP;elseif(x<0)y=3*x*x-2;elsey=sqrt(5);printf(“y=%f\n”,y);}#include<stdio.h>voidmain(){intx;scanf(“%d”,&x);if(x>1000||x<0)printf(“error!\n”);elseif(x>=100){printf(“digit:3\n”);printf(“%d%d%d”,x%10,x/10%10,x/100);}elseif(x/10>0){printf(“digit:2\n”);printf(“%d%d”,x%10,x/10);}else{printf(“digit:1/n”);printf(“%d”,x);}}思考题比较简单，就不写了，哥应该没问题的~四#include<stdio.h>#include<math.h>voidmain(){ints;floatn,t,pi;t=1;pi=0;n=1.0;s=1；while(fabs(t)>1e-6){pi=pi+t;n=n+2;s=-s;t=s/n;}pi=pi*4;printf(“pi=%10.6f\n”，pi);}#include<stdio.h>intx,y;voidmain(){charc；while((c=getchar())!=’\n’){if(c>=’A’&&c<=’Z’)x++;elseif(c>=’0’&&c<=’9’)y++;}printf(“capitalletter:\n”);printf(“%d\n”,x);printf(“number:\n”);printf(“%d\n”,y);}#include<stdio.h>#include<math.h>voidmain(){intm,k,i,sum=0;for(m=101;m<=300；m=m+2){k=sqrt(m);for(i=2;i<=k;i++)if(m%i==0)break;if(i>=k+1)sum=sum+m;}printf(“%d”,sum);}#include<stdio.h>voidmain(){inti,j,k;for(i=1;i<=4;i++){for(j=1;j<=6-i;j++)printf(“”);for(j=1;j<=2*i-1;j++)printf(“*”);printf("\n");}for(i=1;i<=5;i++){for(k=1;k<=i;k++)printf(“”);for(k=1;k<=10-(2*i-1);k++)printf(“*”);printf("\n");}}五第一