算法竞赛入门经典各章(第二版)前4章课后习题答案汇编

第一章

习题1-1

#include int main() { int a,b,c; double d; scanf(\ d=(double)(a+b+c); printf(\3.0); return 0; }

习题1-2 #include int main() { int f; double c; scanf(\ c=5*(f-32)/9; printf(\ return 0; }

习题1-3

#include int main() { int n; scanf(\ printf(\2); return 0; }

习题1-4

#include #include

#define pi 4.0*atan(1.0) int main() { int n; scanf(\ printf(\ printf(\ return 0; }

习题1-5

#include int main() { double x1,y1,x2,y2,a; scanf(\ a=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); printf(\ return 0; }

习题1-6

#include int main() { int n; scanf(\ if(n%2==0) { printf(\ } else { printf(\ } return 0; }

习题1-7

#include

int main() { int n; double a; scanf(\ a=n*95.0; if(a<300) { printf(\ } else { printf(\ } return 0; }

习题1-8

#include #include int main() { double n; scanf(\ printf(\ return 0; }

习题1-9 #include int main() { int a,b,c; scanf(\ if(a==b&&b==c) { printf(\ } if((a*a+b*b==c*c)||(a*a+c*c==b*b)||(b*b+c*c==a*a)) { printf(\