西工大C语言POJ习题测验答案.docx

1、西工大C语言POJ习题测验答案一.1.第一季10题全（注：第五题问题已经解决,确认AC!)#includeintmain()inta,b,sum;scanf(%d%d,&a,&b);sum=a+b;printf(%dn,sum);return0;2.#include#definePI3.1415926intmain()doubler,h,l,s,sq,vq,vz;scanf(%lf%lf,&r,&h);l=2*PI*r;s=PI*r*r;sq=4*PI*r*r;vq=4*PI*r*r*r/3;vz=s*h;printf(%.2lfn%.2lfn%.2lfn%.2lfn%.2lfn,l,s,sq

2、,vq,vz);return0; 3.#includeintmain()inta,b,c;doubled,e;scanf(%d%d%d,&a,&b,&c);d=a+b+c;e=d/3;printf(%lfn%lfn,d,e);return0;4.#includeintmain()inta,b,c;scanf(%d%d%d,&a,&b,&c);if(ab)a=b;if(ac)a=c;printf(%dn,a);return0; 5.#includeintmain()inti=0,j=0,k=1;chara6;while(ai=getchar()!=n)i+;for(;i0;i-)if(aj=ai

3、-1)j+;continue;elsek=0;break;if(k=1)printf(yesn);elseprintf(non);6.#includeintmain()doublea,c;scanf(%lf,&a);switch(int)a/10)case0:c=a*0.1;break;case1:c=(a-10)*0.075+10*0.1;break;case2:case3:c=(a-20)*0.05+10*0.075+10*0.1;break;case4:case5:c=(a-40)*0.03+20*0.05+10*0.075+10*0.1;break;case6:case7:case8:

4、case9:c=(a-60)*0.015+20*0.03+20*0.05+10*0.075+10*0.1;break;default:c=(a-100)*0.01+40*0.015+20*0.03+20*0.05+10*0.075+10*0.1;printf(%lfn,c);return0;7.#includeintmain()doublea,b,c;scanf(%lf,&a);c=(int)a;if(ac)a=c+1;if(a15)b=(a-15)*2.1+7+13*1.5;elseif(a2)b=(a-2)*1.5+7;elseb=7;printf(%lfn,b);return0;8.#i

5、ncludeintmain()inta,b,c,e,f=30,g=31,n;scanf(%d-%d-%d,&a,&b,&c);if(a%400=0)|(a%100!=0&a%4=0)e=29;elsee=28;switch(b)case1:n=c;break;case2:n=g+c;break;case3:n=g+e+c;break;case4:n=g+e+g+c;break;case5:n=g+e+g+f+c;break;case6:n=g+e+g+f+g+c;break;case7:n=g+e+g+f+g+f+c;break;case8:n=g+e+g+f+g+f+g+c;break;ca

6、se9:n=g+e+g+f+g+f+g+g+c;break;case10:n=g+e+g+f+g+f+g+g+f+c;break;case11:n=g+e+g+f+g+f+g+g+f+g+c;break;default:n=g+e+g+f+g+f+g+g+f+g+f+c;printf(%dn,n);return0;9.#includeintmain()intx;scanf(%d,&x);if(x=90&x=80)printf(Bn);elseif(x=70)printf(Cn);elseif(x=60)printf(Dn);elseprintf(En);return0;10.#includei

7、ntmain()doublex,y,s;scanf(%lf,%lf,&x,&y);s=(x+2)*(x+2)+(y-2)*(y-2);if(s1)s=(x+2)*(x+2)+(y+2)*(y+2);if(s1)s=(x-2)*(x-2)+(y+2)*(y+2);if(s1)s=(x-2)*(x-2)+(y-2)*(y-2);if(s1)printf(0n);return1;printf(10n);return0;二。第二季15题全11. #includeint main() int x=0,a=0,c=0,i=1; scanf(%d%d,&x,&a); c=x; for(i=1;ia;i+)

8、c=(c*x)%1000; ; if(c100) if(c=100) printf(%dn,c); return 0;12. #includeint main() int i=1,a=0,b=0,c=1016,k=1; for(;k=1;) c=c+4; a=c; b=c; for(i=1;i=4;i+) a=a/4*5+1; if(a%4!=0) k=0; ; ; a=a/4*5+1; if(k=1) printf(%d %dn,a,b); break; ; ; return 0;13。#include#includeint main() int i=1,n=0,b=0; double j=

9、0,k=0,m=0; scanf(%d,&n); for(;i=n;i+) b=i%2-1; k=pow(-1,b); m=pow(2,i); j+=k*m/(m-k)/(2*m+k); ; printf(%.6lfn,j); return 0;14. #include#includeint main() int a=0,b=0,i=0,t; scanf(%d%d,&a,&b); if(ab) t=a;a=b;b=t; for(;a=b;a+) int m=1; for(i=2;i=sqrt(a);i+) if(a%i=0) m=0; break; if(m=1) printf(%d ,a);

10、 printf(n); return 0;15.#include#includeint main() int a=0,b=0,c=0; scanf(%d,&a); b=(int)pow(a,2); c=(int)pow(a,3); if(a%2) printf(%d*%d*%d=%d=%d,a,a,a,c,b-a/2*2); int n=1; for(;na;n+) printf(+%d,b-a/2*2+2*n); printf(n); ; if(a%2=0) int n=1; printf(%d*%d*%d=%d=%d,a,a,a,c,b+1-a); for(;na;n+) printf(+

11、%d,b+1-a+n*2); printf(n); ; return 0;16#include#includeint main() int a=0,b=0,c=0,d=0,e=0,x=0,y=0,z=0,u=0,v=0; double f=0; for(a=0;a=2;a+) double m=0; for(b=0;b=(20-8*a)/5;b+) for(c=0;c=(20-8*a-5*b)/3;c+) for(d=0;d=(20-8*a-5*b-3*c)/2;d+) e=20-8*a-5*b-3*c-2*d; m=2000*pow(1+0.0084*12*8,a)*pow(1+0.0075

12、*12*5,b)*pow(1+0.0069*12*3,c)*pow(1+0.0066*12*2,d)*pow(1+0.0063*12,e); if(fm) f=m; x=a,y=b,z=c,u=d,v=e; ; ; ; ; ; printf(%d %d %d %d %dn%.2lfn,x,y,z,u,v,f); return 0;17.#include#includeint main() double a=0; int i=0,b=0; scanf(%lf,&a); b=(int)a; for(;(int)(b/pow(10,i);) i+; printf(%dn,i); return 0;1

13、8。#includeint main() double a=1,b=2,i=1,m=0; for(;i=20;i+) m+=b/a; b=a+b; a=b-a; printf(%.6lfn,m); return 0;19.#include#includeint main() double a=0,b=0,c=0,e=0; scanf(%lf%lf,&a,&b); for(;b-a0.0001;) c=2*pow(a,3)-4*pow(a,2)+3*a-6; e=2*pow(a+b)/2,3)-4*pow(a+b)/2,2)+3*(a+b)/2-6; if(c*e=0) if(e=0) a=(a

14、+b)/2; break; ; if(c*e!=0) if(c*e0) b=(a+b)/2; else a=(a+b)/2; ; ; printf(%.2lfn,a); return 0;20.#includeintmain()chari,j,k;for(i=X;i=Z;i+)for(j=X;j=Z;j+)if(i!=j)for(k=X;k=Z;k+)if(i!=k&j!=k)if(k!=X)&(k!=Z)&(i!=X)printf(A=%cnB=%cnC=%cn,i,j,k);return0; 21.#includeint main() int a,b,i,j,cnt=0,sum=0; b=

15、-1; for(i=500;i=800;i+) for(j=2;ji-1) cnt+; a=b*i; sum+=a; b=-b; printf(%d %dn,cnt,sum); return 0;22.#includeint main() int i=2,A1=1,A2=1,A3,A4,n,M=10,j,S1=2,S2=0; for(n=1;n=3;n+) M=M*10; for(j=1;S1+A4M|S2=M;j+) A3=A1+2*A2; A4=A2+2*A3; S1=S1+A3; S2=S1+A4; A1=A2; A2=A3; i+; printf(%dn,i); return 0;23

16、.#include #include int main() double x1,x2,x3=0,a; scanf(%lf,&a); x1=a; while(fabs(x1-x3)=0.00001) x2=(x1+a/x1)/2; x3=x1; x1=x2; printf(%.5lfn,x1); return 0;24.#include int main() int i; double a=1,sum=0; for(i=1;1/a=0.000001;i+) if(i%2=0)sum=sum-1/a; else sum=sum+1/a; a=a+2; sum=sum*4; printf(%.6lf

17、n,sum); return 0;25. #include int main() int a,i,n; for (a=6;a=1000;a+) n=0; for(i=1;ia;i+) if(a%i=0) n=n+i; if(n=a) printf(%d=,a); for (i=1;ia;i+) if(a%i=0) if(ia/2) printf(%d+,i); else printf(%d,i); printf(n); return 0;三.第三季已齐全21.#include #include int main() int x,y,a,b,l,s1,s2,t; scanf(%d%d%d%d%d

18、,&x,&y,&a,&b,&l); if(xb)t=s1/(a-b); printf(%dn,t); else if(ab)t=s2/(a-b); printf(%dn,t); else if(ab)t=s1/(b-a); printf(%dn,t); else printf(impossiblen); return 0;22.#include#includeintmain()intN,i,j,k,x,a,cnt=0;scanf(%d,&N);for(k=7;k=0;i-)a=(int)pow(10,i);x=j/a;if(x=7|k%7=0)printf(%d,k);break;elsej=

19、j-a*x;return0;23.#includeint main() int a,b,c,d,e,f,g,h,i,j,n; scanf(%d,&n); if(n79)printf(errorn); for(j=0;j=9;j+) for(i=0;i=9;i+)if(i=j)continue; else for(h=0;h=9;h+)if(h=j|h=i)continue; else for(g=0;g=9;g+)if(g=h|g=i|g=j)continue; else for(f=0;f=9;f+)if(f=g|f=h|f=i|f=j)continue; else for(e=0;e=9;

20、e+)if(e=f|e=g|e=h|e=i|e=j)continue; else for(d=0;d=9;d+)if(d=e|d=f|d=g|d=h|d=i|d=j)continue; else for(c=0;c=9;c+)if(c=d|c=e|c=f|c=g|c=h|c=i|c=j)continue; else for(b=0;b=9;b+)if(b=c|b=d|b=e|b=f|b=g|b=h|b=i|b=j)continue; else for(a=0;a=9;a+)if(a=b|a=c|a=d|a=e|a=f|a=g|a=h|a=i|a=j)continue; else if(doub

21、le(a*10000+b*1000+c*100+d*10+e)/double(f*10000+g*1000+h*100+i*10+j)=n) printf(%d%d%d%d%d/%d%d%d%d%d=%dn,a,b,c,d,e,f,g,h,i,j,n); else continue; return 0; 24。#includeint main()int a=1,b1=0,b2,t,n; scanf(%d,&t); for(n=1;n=t;n+) b2=2*b1+3*a; a=b1; b1=b2; printf(%d %dn,a,b2); return 0;25.#include#includeintmain()longs=0,l=0,m=0;intn=0,i=0,j=0,k=0;scanf(%d,&n);for(s=14000;s+)for(i=1;i=99;i+=2)l=s*100+i;for(m=3;m=(int)pow(l,0.5);m+=2)if(l%m=0)gotoB;gotoA;B:;k+;if(n=k)printf(%ld%ldn,s*100,l);break;