C面向对象程序设计教程第版陈维兴林小茶课后习题答案及解析

int a, b; cin >> a >>b; if(a > b) {

swap(a, b); }

cout << a << \ << b << endl; return 0; }

2.26 用二分法求解 f(x)=0的根。 #include using namespace std; double Fun(double x) {

return 35*x +25; //假设f(x)=35x+25 }

int main() {

double a, b; cin >> a; if(Fun(a) == 0) {

cout << \ << a << endl; return 0; } do {

cin >> b; }

while ((Fun(a) * Fun(b)) >= 0); if(Fun(b) == 0) {

cout << \ << b << endl; return 0; }

if(a > b) {

a = a + b; b = a - b; a = a - b; } while(1) {

if(Fun((a + b)/2) == 0) {

cout << \ << (a + b)/2 << endl; return 0; }

if(Fun(a) * Fun((a + b)/2) < 0) {

b = (a + b)/2; }

if(Fun(b) * Fun((a + b)/2) < {

a = (a + b)/2; } }

return 0; }

3.1 类声明的一般格式是什么? class 类名 {

[private:]

私有数据成员和成员函数

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