day2 C/C++输⼊输出（上）

1.浮点除法#include bits/stdc.h using namespace std; int main(){ int a,b;cin a b; double c (double)a/b; cout c; return 0; }2.甲流疫情死亡率#includebits/stdc.h using namespace std; int main(){ int a,b;cin a b; double c (double)(100*b)/a; printf(%.3f%%,c); return 0; }3.温度表达转化#includebits/stdc.h using namespace std; int main(){ double f; cin f; double c (f-32)*5/9; printf(%.5f,c); return 0; }4.计算并联电阻的阻值#includebits/stdc.h using namespace std; int main(){ double r1,r2;cin r1r2; double R 1/((1/r1)(1/r2)); printf(%.2f,R); return 0; }5.与圆相关的计算#include bits/stdc.h using namespace std; int main(){ double r; cin r; double d 2*r; double c d*3.14159; double s 3.14159*r*r; printf(%.4f %.4f %.4f,d,c,s); return 0; }6.对⻬输出#include bits/stdc.h using namespace std; int main(){ int a,b,c;cin a bc; printf(%8d %8d %8d,a,b,c); return 0; }7.糖果游戏​ #includebits/stdc.h using namespace std; int main(){ int a[6],l,r,s; cina[1]a[2]a[3]a[4]a[5]; for(int i1;i5;i){ sa[i]/3; a[i]s; li1?5:i-1; ri%51; a[l]s; a[r]s; } printf(%5d%5d%5d%5d%5d,a[1],a[2],a[3],a[4],a[5]); return 0; } ​8.数字反转#includebits/stdc.h using namespace std; int main(){ char c1,c2,c3,c4,c5; cinc1c2c3c4c5; coutc5c4c3c2c1; return 0; }9.三⻆形⾯积#include bits/stdc.h using namespace std; int main(){ double a,b,c;cin a b c; double p (abc)/2; double s sqrt(p*(p-a)*(p-b)*(p-c)); printf(%.1f,s); return 0; }