C ++ Primer Chapter 5 after-school programming questions, primer Chapter 5

C ++ Primer Chapter 5 after-school programming questions, primer Chapter 5


1. Code

# Include <iostream> int main () {using namespace std; int num1; int num2; int total = 0; cout <"Enter the start number \ n "; cin> num1; cout <"Enter the end number \ n"; cin> num2; for (num1; num1 <= num2; num1 ++) total = num1 + total; the integer between cout <num1 <"and" <num2 <"and is <total <endl; return 0 ;}

Running result

2. Code

# Include <iostream> int main () {using namespace std; double total = 0.0; double in; cout <"enter a number:"; cin> in; while (in! = 0) {total + = in; cout <"sum of all input numbers:" <total <"\ n"; cout <"enter the next number: "; cin> in;} cout <" Running ended "; return 0 ;}

Running result

3. Code

# Include <iostream> int main () {using namespace std; double daphne = 100; double cleo = 100; int year = 1; while (daphne> = cleo) {daphne + = 100*0.1; cleo + = cleo * 0.05; cout <"year <, the investment value of daphne is "<daphne <" cleo investment value is "<cleo <endl; year ++ ;} cout <"no." <year <", when cleo exceeds the investment value of daphne" <endl; return 0 ;}

Running result

4. Code

# Include <iostream> const char * months [12] = ", "August", "August"}; int main () {using namespace std; int sales [12]; int total; for (int I = 1; I <= 12; I ++) {cout <"enter" <months [I-1] <"sales quantity: "; cin> sales [I-1];} for (int j = 0; j <12; j ++) {total = total + sales [j];} cout <"total sales:" <total <endl; return 0 ;}

Running result

5. Code

# Include <iostream> const char * months [12] = ", "July", "August", "September", "October", "November", "December"}; int main () {using namespace std; int sales [3] [12]; int total [3] = {0}; // Initialization is required. Otherwise, the initial value is not 0 int sum; for (int a = 1; a <= 3; a ++) {for (int I = 1; I <= 12; I ++) {cout <"Enter the" <a <"year" <months [I-1] <"sales quantity :"; cin> sales [A-1] [I-1] ;}for (int B = 0; B <3; B ++) {for (int j = 0; j <12; j ++) {total [B] = total [B] + sales [B] [j];} sum = sum + total [B]; cout <"no." <B + 1 <"total annual sales:" <total [B] <endl ;}cout <"total sales: "<sum <endl; return 0 ;}

Running result

6. Code

<Pre name = "code" class = "cpp"> // you must add while (cin. get ()! = '\ N'); # include <iostream> using namespace std; const int LEN = 60; struct Car {char brand [LEN]; int year ;}; int main () {int num; cout <"How many cars do you wish to catalog? "; Cin> num; while (cin. get ()! = '\ N'); Car * ps = new Car [num]; for (int I = 0; I <num; I ++) {cout <"Car #" <(I + 1) <": \ n"; cout <"Please enter the make:"; cin. getline (ps [I]. brand, LEN); cout <"Please enter the year made:"; cin> ps [I]. year; while (cin. get ()! = '\ N');} cout <"Here is your collection: \ n"; for (int I = 0; I <num; I ++) {cout <ps [I]. year <"" <ps [I]. brand <endl;} delete [] ps; return 0 ;}

Running result
7. Code

#include<iostream>#include<cstring>const int STR_LEN=60;int main(){  using namespace std;  char words[STR_LEN];  int count=0;  cout << "Enter words(to stop,type the word done):\n";  while (cin >> words && strcmp("done", words))    ++count;  cout << "You entered a total of " << count << " words .\n" <<endl;  return 0;}

Running result

8. Code

#include<iostream>#include<string>int main(){  using namespace std;  string words;  int count=0;  cout << "Enter words {to stop,type the word done}:\n";  while (cin >> words && words != "done")    ++count;  cout << "You entered a total of " << count << " words .\n";  return 0;}

Running result

9. Code

#include<iostream>int main(){  using namespace std;  int row;  cout << "Enter number of row:";  cin >> row;  for (int i=0; i<row; i++)  {    for (int j=row-i; j>1; j--)    {      cout << ".";    }    for (int k=0; k<=i; k++)    {      cout << "*";    }    cout << "\n";  }  return 0;}

Running result



Answers to programming questions after class in the Chinese version of C Primer Plus (fifth edition!

C ++ primer plus (Chinese version) which of the following answers to programming after the fifth edition is shared by Jack? // thanks, my QQ number is 115425796.
 
Hi, hero. Can you send me the answers to C Primer Plus (fifth edition) programming exercises after class? You

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