因为用的是MFC,所以就不把代码贴出来了,安装包在文章顶部,在此只把另一个计算器的代码贴出来:
#include<cstdio>
#include<cmath>
#include<iostream>
#include<string>
#include<windows.h>
using namespace std;
int Atoi(string s,int radix) {
int ans=0;
for(int i=0; i<s.size(); i++) {
char t=s[i];
if(t>='0'&&t<='9') ans=ans*radix+t-'0';
else ans=ans*radix+t-'A'+10;
}
return ans;
}
string intToA(int n,int radix) {
string ans="";
do {
int t=n%radix;
if(t>=0&&t<=9) ans+=t+'0';
else ans+=t-10+'A';
n/=radix;
} while(n!=0);
return ans;
}
void jinzhi() {
string str1;
long long d1, d2;
cout<<"输入现在的数: ";
cin>>str1;
cout<<"输入现在的进制(2~36): ";
cin>>d1;
cout<<"输入目标进制(2~36): " ;
cin>>d2;
if(d1<2||d1>36||d2<2||d2>36||str1[str1.size()-1]>d1) cout<<"数据错误!"<<endl;
else {
if(d2!=10) cout<<"结果为"<<intToA(Atoi(str1, d1), d2)<<endl;
else cout<<"结果为"<<Atoi(str1, d1)<<endl;
}
system("pause");
getchar();
system("cls");
}
void sushu() {
long long n;
cout<<"输入要判断的数: ";
cin>>n;
for(int i=2; i<=sqrt(n); i++) {
if(n%i==0) {
cout<<n<<"是合数"<<endl;
system("pause");
getchar();
system("cls");
return;
}
}
cout<<n<<"是素数"<<endl;
system("pause");
getchar();
system("cls");
}
void jia() {
long long a, b;
cout<<"输入2个数进行加法: ";
cin>>a>>b;
cout<<endl<<"结果为"<<a+b<<endl;
system("pause");
getchar();
system("cls");
}
void jian() {
long long a, b;
cout<<"输入2个数进行减法: ";
cin>>a>>b;
cout<<endl<<"结果为"<<a-b<<endl;
system("pause");
getchar();
system("cls");
}
void chu() {
double a, b;
cout<<"输入2个数进行除法: ";
cin>>a>>b;
printf("结果为%llf\n", a/b);
system("pause");
getchar();
system("cls");
}
void cheng() {
long long a, b;
cout<<"输入2个数进行乘法: ";
cin>>a>>b;
cout<<endl<<"结果为"<<a*b<<endl;
system("pause");
getchar();
system("cls");
}
bool f(long long n) {
for(long long i=2; i<=sqrt(n); i++) {
if(n%i==0) {
return 0;
}
}
return 1;
}
void fenjie() {
int n;
cout<<"输入要分解的数: ";
cin>>n;
if(f(n)) {
cout<<n<<"本身就为素数";
} else {
cout<<n<<"=";
for(int i=2; i*i<=n; i++) {
if(!f(i)) {
continue;
} else {
while(n!=i) {
if(n%i==0) {
cout<<i<<"*";
n=n/i;
} else {
break;
}
}
}
}
cout<<n;
}
cout<<endl;
system("pause");
getchar();
system("cls");
}
void jiecheng() {
int b;
cout<<"输入要进行阶乘的数: ";
cin>>b;
long long a=1;
for(int i=b; i>=1; i--) {
a*=i;
}
cout<<"结果为"<<a<<endl;
system("pause");
getchar();
system("cls");
}
void cifang() {
int b, c;
cout<<"输入要求次方的数: ";
cin>>b;
cout<<"输入要求的几次方: ";
cin>>c;
long long a=1;
for(int i=c; i>=1; i--) {
a*=b;
}
cout<<"结果为"<<a<<endl;
system("pause");
getchar();
system("cls");
}
void kaifang() {
long long b;
cout<<"输入要求开方的数: ";
cin>>b;
double a=sqrt(b);
printf("结果为%llf\n", a);
system("pause");
getchar();
system("cls");
}
void gongyin() {
long long b, a, max=-123415;
cout<<"输入要求最大公因数的两个数: ";
cin>>b>>a;
for(long long i=1; i<=min(a, b); i++) {
if(a%i==0&&b%i==0&&i>max) {
max=i;
}
}
cout<<"结果为"<<max<<endl;
system("pause");
getchar();
system("cls");
}
void gongbei() {
long long b, a, min;
cout<<"输入要求最小公倍数的两个数: ";
cin>>b>>a;
for(long long i=max(a, b); i<=b*a; i++) {
if(i%i==0&&i%b==0) {
min=i;
break;
}
}
cout<<"结果为"<<min<<endl;
system("pause");
getchar();
system("cls");
}
void paixu() {
int n;
cout<<"请输入元素个数:";
cin >> n;
int a[100000]= {};
cout << "请输入元素:";
for (int i = 0; i < n; i++) {
cin >> a[i];
}
for (int i = 0; i < n - 1; i++) {
for (int j = 0; j < n - i - 1; j++) {
if (a[j] > a[j + 1]) {
int temp = a[j];
a[j] = a[j + 1];
a[j + 1] = temp;
}
}
}
cout << "排序后的元素:\n";
for (int i = 0; i < n; i++) {
cout << a[i] << " ";
}
cout<<endl;
system("pause");
getchar();
system("cls");
}
void gongneng(int a) {
switch(a) {
case 1:
jia();
return;
case 2:
jian();
return;
case 3:
chu();
return;
case 4:
cheng();
return;
case 5:
sushu();
return;
case 6:
jiecheng();
return;
case 7:
cifang();
return;
case 8:
kaifang();
return;
case 9:
fenjie();
return;
case 10:
gongyin();
return;
case 11:
gongbei();
return;
case 12:
paixu();
return;
case 13:
jinzhi();
return;
}
}
int main() {
int a;
while(1) {
cout<<"**************计算器V2.0**************"<<endl;
cout<<"* 1.加法 *"<<endl;
cout<<"* 2.减法 *"<<endl;
cout<<"* 3.除法 *"<<endl;
cout<<"* 4.乘法 *"<<endl;
cout<<"* 5.素数 *"<<endl;
cout<<"* 6.求阶乘 *"<<endl;
cout<<"* 7.求次方 *"<<endl;
cout<<"* 8.求开方 *"<<endl;
cout<<"* 9.分解质因数 *"<<endl;
cout<<"* 10.求最大公因数 *"<<endl;
cout<<"* 11.求最小公倍数 *"<<endl;
cout<<"* 12.排序 *"<<endl;
cout<<"* 13.进制转换 *"<<endl;
cout<<"* 14.退出 *"<<endl;
cout<<"**************************************"<<endl;
cout<<"请选择第几项功能: ";
cin>>a;
system("cls");
if(a==14) {
break;
} else if(a>14||a<1) {
cout<<"数据错误!"<<endl;
system("pause");
getchar();
system("cls");
} else {
gongneng(a);
}
}
return 0;
}
标签:cout,int,str1,system,long,c++,计算器,include
From: https://blog.csdn.net/j5486545648564/article/details/140730016