//0
#include
#include

using std::cin;
using std::cout;
using std::string;
using std::endl;

int main(int argc, char const *argv[])
{
cout << "Please enter your first name:";
string name;
cin >> name;

const string greeting = "Hello, " + name + "!";//构造将要输出的信息

const int pad = 1;//空白行的个数
const int rows = pad * 2 + 3;
const string::size_type cols = greeting.size() + pad * 2 + 2;

cout << endl;
for (int r = 0; r != rows; ++r)
{
string::size_type c = 0;//目前已经输出的列数
while(c != cols){
if(r == pad + 1 && c == pad + 1){
cout << greeting;
c += greeting.size();
}else{
if(r == 0 || r == rows - 1 ||
c == 0 || c == cols - 1) //输出边框第0行和最后一行以及第0列和最后一列
cout << "*";
else
cout << " ";
++c;
}
}
cout << endl;
}
return 0;
}
//1
#include
#include

using std::cin;
using std::cout;
using std::string;
using std::endl;

int main(int argc, char const *argv[])
{
cout << "Please enter your first name:";
string name;
cin >> name;

const string greeting = "Hello, " + name + "!";//构造将要输出的信息

const int pad = 1;//空白行的个数
const int rows = 3;
const string::size_type cols = greeting.size() + 2;

cout << endl;
for (int r = 0; r != rows; ++r)
{
string::size_type c = 0;//目前已经输出的行数
while(c != cols){
if(r == pad && c == pad ){
cout << greeting;
c += greeting.size();
}else{
if(r == 0 || r == rows - 1 ||
c == 0 || c == cols - 1)
cout << "*";
else
cout << " ";
++c;
}
}
cout << endl;
}
return 0;
}
//2
#include
#include

using std::cin;
using std::cout;
using std::string;
using std::endl;

int main(int argc, char const *argv[])
{
cout << "Please enter your first name:";
string name;
cin >> name;

const string greeting = "Hello, " + name + "!";//构造将要输出的信息

const int pad = 3;//空白行的个数
const int rows = 3;
const string::size_type cols = greeting.size() + 2;

cout << endl;
for (int r = 0; r != rows; ++r)
{
string::size_type c = 0;//目前已经输出的行数
while(c != cols){
if(r == pad && c == pad ){
cout << greeting;
c += greeting.size();
}else{
if(r == 0 || r == rows - 1 ||
c == 0 || c == cols - 1)
cout << "*";
else
cout << " ";
++c;
}
}
cout << endl;
}
return 0;
}
//3
#include
#include

using std::cin;
using std::cout;
using std::string;
using std::endl;

int main(int argc, char const *argv[])
{
cout << "Please enter your first name:";
string name;
cin >> name;

const string greeting = "Hello, " + name + "!";//构造将要输出的信息

int pad;//空白行的个数
cin >> pad;//输入空格数

const int rows = pad * 2 + 3;
const string::size_type cols = greeting.size() + pad * 2 + 2;

cout << endl;
for (int r = 0; r != rows; ++r)
{
string::size_type c = 0;//目前已经输出的行数
while(c != cols){
if(r == pad + 1 && c == pad + 1){
cout << greeting;
c += greeting.size();
}else{
if(r == 0 || r == rows - 1 ||
c == 0 || c == cols - 1)
cout << "*";
else
cout << " ";
++c;
}
}
cout << endl;
}
return 0;
}
//4
#include
#include

using std::cin;
using std::cout;
using std::string;
using std::endl;

int main(int argc, char const *argv[])
{
cout << "Please enter your first name:";
string name;
cin >> name;

const string greeting = "Hello, " + name + "!";//构造将要输出的信息

const int pad = 1;//空白行的个数
const int rows = pad * 2 + 3;
const string::size_type cols = greeting.size() + pad * 2 + 2;
const string spaces = string(cols - 2,' ');

cout << endl;
for (int r = 0; r != rows; ++r)
{
string::size_type c = 0;//目前已经输出的行数
while(c != cols){
if(r == pad + 1 && c == pad + 1){
cout << greeting;
c += greeting.size();
}else{
if(r == 0 || r == rows - 1 ||
c == 0 || c == cols - 1) {
cout << "*";
++c;
}
else if (r == pad + 1){
cout << " ";
++c;
}else{
cout << spaces;
c += spaces.size();
}
}
}
cout << endl;
}
return 0;
}

第2章习题 Accelerate C++ 学习笔记6_#include运行结果

//5
#include
using std::cout;
using std::endl;
using std::string;

int main(int argc, char const *argv[])
{
int rows = 10;//行数,正方形的行数用列数表示
int cols1 = rows * 2;//长方形的列数
// for (int i = 0; i != rows; ++i)//正方形
// {
// string::size_type c = 0;
// while(c != rows){
// if(i == 0 || i == rows - 1 ||
// c == 0 || c == rows - 1){
// cout << "*";
// }else{
// cout << " ";
// }
// c++;
// }
// cout << endl;
// }

// for (int i = 0; i != rows; ++i)//长方形
// {
// string::size_type c = 0;
// while(c != cols1){
// if(c == 0 || c == cols1 - 1 ||
// i == 0 || i == rows - 1){
// cout << "*";
// }else{
// cout << " ";
// }
// c++;
// }
// cout << endl;
// }


/*输出三角形
*
***/
//实心三角
for (int i = 0; i != rows; ++i)
{
int m = rows - (i + 1);
while(m != 0){//输出空格,
cout << " ";
m--;
}

int j = 2 * (i + 1) - 1;
while(j != 0){//输出*,1,3,5.。。。
cout << "*";
j--;
}
cout << endl;

}
//空心三角形
int rows = 8;
for (int i = 0; i != rows; ++i)
{
int m = rows - (i + 1);
while(m != 0){//输出空格,
cout << " ";
m--;
}

int j = 2 * (i + 1) - 1;
while(j != 0){//输出*,1,3,5.。。。
if(i == 0 || i == rows - 1){
cout << "*";
}else{//输出空心内容
if(j == 1 || j == 2 * (i + 1) - 1){
cout<<"*";
}else{
cout<<" ";
}
}

j--;
}
cout << endl;
}

return 0;
}

第2章习题 Accelerate C++ 学习笔记6_c++_02
运行结果

//6
#include

int main(int argc, char const *argv[])
{
int i = 0;
while(i < 10){//按序输出1到10,每输出一个数并换行
i += 1;
std::cout << i << std::endl;
}
return 0;
}
//7
#include
using std::cout;

int main(int argc, char const *argv[])
{
for (int i = 10; i != -6; --i)
{
cout << i << " ";
}
cout << std::endl;
return 0;
}
//8
#include
using std::cout;

int main(int argc, char const *argv[])
{
int res = 1;;
for (int i = 1; i != 10; ++i)
{
res *= i;
}
cout << res << std::endl;
return 0;
}
// //9
#include
using std::cin;
using std::cout;
int main(int argc, char const *argv[])
{

cout << "Please enter two number:";
double num1 ,num2;
cin >> num1 >> num2;

if(num1 >= num2)
cout << num1;
else
cout << num2;

cout << std::endl;

return 0;
}
//10
#include

int main(int argc, char const *argv[])
{
int k = 0;
while(k != 10){//连续输出10个*,然后换行
using std::cout;//将cout定义为std::cout的代替名
cout << "*";
++k;
}
std::cout << std::endl; //标准库中的名称
return 0;
}