#include<cstdio>
using namespace std;intmain(){
int a, b;scanf("%d%d",&a,&b);printf("%d\n", a + b);return0;}
1007 计算(a+b)×c的值
#include<cstdio>
using namespace std;intmain(){
int a, b, c;scanf("%d%d%d",&a,&b,&c);printf("%d\n",(a + b)* c);return0;}
1008 计算(a+b)/c的值
#include<cstdio>
using namespace std;intmain(){
int a, b, c;scanf("%d%d%d",&a,&b,&c);printf("%d\n",(a + b)/ c);return0;}
1009 带余除法
#include<cstdio>
using namespace std;intmain(){
int a, b;scanf("%d%d",&a,&b);printf("%d %d\n", a / b, a % b);return0;}
1010 计算分数的浮点数值
#include<cstdio>
using namespace std;intmain(){
int a, b;scanf("%d%d",&a,&b);printf("%.9f\n",1.0* a / b);return0;}
第二节 常量和变量
1011 甲流疫情死亡率
#include<cstdio>
using namespace std;intmain(){
int a, b;scanf("%d%d",&a,&b);printf("%.3f%%\n",100.0* b / a);return0;}
1012 计算多项式的值
#include<cstdio>
using namespace std;intmain(){
double x, a, b, c, d;scanf("%lf%lf%lf%lf%lf",&x,&a,&b,&c,&d);printf("%.7f\n", a*x*x*x + b*x*x + c*x +d);return0;}
1013 温度表达转化
#include<cstdio>
using namespace std;intmain(){
double F, C;scanf("%lf",&F);
C =5*(F -32)/9;printf("%.5f\n", C);return0;}
1014 与圆相关的计算
#include<cstdio>
using namespace std;intmain(){
double r, d, l , s;double pi =3.14159;scanf("%lf",&r);
d =2* r;
l =2* pi * r;
s = pi * r * r;printf("%.4f %.4f %.4f\n", d, l, s);return0;}
1015 计算并联电阻的阻值
#include<cstdio>
using namespace std;intmain(){
double r1, r2, R;scanf("%lf%lf",&r1,&r2);
R =1.0/(1.0/ r1 +1.0/ r2);printf("%.2f\n", R);return0;}
第三节 标准数据类型
1016 整型数据类型存储空间大小
#include<iostream>
using namespace std;intmain(){
int a;short b;
cout <<sizeof(a)<<' '<<sizeof(b)<< endl;return0;}
#include<iostream>
using namespace std;intmain(){
double a, b, r;
cin >> a >> b;
r = a -int(a / b)* b;
cout << r << endl;return0;}
1030 计算球的体积
#include<cstdio>
using namespace std;intmain(){
double r, V;scanf("%lf",&r);
V =4.0/3.0*3.14* r * r * r;printf("%.2f\n", V);return0;}
1031 反向输出一个三位数
#include<cstdio>
using namespace std;intmain(){
int a;scanf("%d",&a);printf("%d%d%d\n", a%10, a/10%10, a/10/10);return0;}
1032 大象喝水
#include<cstdio>#include<cmath>
using namespace std;intmain(){
int h, r, x;scanf("%d%d",&h,&r);
x =ceil(20000/(3.14* r * r * h));printf("%d\n", x);return0;}
1033 计算线段长度
#include<cstdio>#include<cmath>
using namespace std;intmain(){
double xa, ya, xb, yb, len;scanf("%lf%lf%lf%lf",&xa,&ya,&xb,&yb);
len =sqrt((xb - xa)*(xb - xa)+(yb - ya)*(yb - ya));printf("%.3f\n", len);return0;}
1034 计算三角形面积
#include<cstdio>#include<cmath>
using namespace std;intmain(){
float x1, y1, x2, y2, x3, y3;double a, b, c, p, s;scanf("%f%f%f%f%f%f",&x1,&y1,&x2,&y2,&x3,&y3);
a =sqrt((x2 - x1)*(x2 - x1)+(y2 - y1)*(y2 - y1));
b =sqrt((x3 - x2)*(x3 - x2)+(y3 - y2)*(y3 - y2));
c =sqrt((x1 - x3)*(x1 - x3)+(y1 - y3)*(y1 - y3));
p =(a + b + c)/2;
s =sqrt(p *(p - a)*(p - b)*(p - c));printf("%.2f\n", s);return0;}
1035 等差数列末项计算
#include<cstdio>
using namespace std;intmain(){
int a1, a2, n;scanf("%d%d%d",&a1,&a2,&n);printf("%d\n", a1 +(a2 - a1)*(n -1));return0;}
1036 AxB问题
#include<cstdio>
using namespace std;intmain(){
int A, B;scanf("%d%d",&A,&B);printf("%lld\n",(longlong)A *(longlong)B);return0;}
1037 计算2的幂
#include<cstdio>#include<cmath>
using namespace std;intmain(){
int n;scanf("%d",&n);printf("%d\n",(int)pow(2, n));return0;}
1038 苹果和虫子
#include<cstdio>#include<cmath>#include<algorithm>
using namespace std;intmain(){
int n, x, y, left, ans;scanf("%d%d%d",&n,&x,&y);
left = n -ceil(1.0* y / x);printf("%d\n",max(0, left));return0;}