实例代码_第83页-得得之家

C++定义数字

#include iostreamusing namespace std;int main () {// number definition:shorts;inti;longl;floatf;

C++通过引用调用

#include iostreamusing namespace std;// function definition to swap the values.void swap(int x, int y) {

C++从函数返回数组

#include iostream#include ctimeusing namespace std;// function to generate and retrun random numbers.

C++将数组传递给函数

#include iostreamusing namespace std;double getAverage(int arr[], int size) {int i, sum = 0;double avg;

C++指向数组的指针

#include iostreamusing namespace std;int main () {// an array with 5 elements.double balance[5] = {1000.0, 2.0, 3.4, 17.0, 50.0};

C++访问数组元素

#include iostreamusing namespace std;#include iomanipusing std::setw;int main () {int n[ 10 ];// n is an array of 10 integers

C++字符串

#include iostreamusing namespace std;int main () {char greeting[6] = {H, e, l, l, o, \\0};

C++字符串函数

#include iostream#include cstringusing namespace std;int main () {char str1[10] = Hello;

C++指针

// #include iostreamusing namespace std;int main () {intvar1;char var2[10];cout Address of var1 variable: ;

C++使用指针

#include iostreamusing namespace std;int main () {intvar = 20;// actual variable declaration.