The basics of programming in c++ for beginners

Tasks: while loops, do while, nested loops

We met with loops while and do while in C++ and c nested constructions in loops. Let us tasks solving.

1. Organize continuous input of numbers with the keyboard, until the user has entered 0. After entering a zero, show on the screen the number of numbers, which were introduced, their total amount and the arithmetic mean. Tip: you must declare the counter variable, that will count the number of entered numbers, and variable, that will accumulate a total sum of numbers.

2. It is necessary to sum up all the odd integers, which will introduce the user to the keyboard.

3. The task is more difficult. Draw an isosceles triangle of characters ^. The height of a user selects. For example: height = 5, on the screen

task nested loops

Read how to determine the mobile browser javascript.

Tasks: while loops, do while, nested loops
5 (100%) 17 vote[s]

116 thoughts on “Tasks: while loops, do while, nested loops

    1. Iterator main loop enters with the value 0, therefore, the first nested loop (if we make the appropriate calculations) j = 1, j = 2, j = 3, j = 4; Since this cycle is responsible for the gaps, we'll get 4 whitespace. Then iterator(i=0) It goes down in the second cycle, wherein j = 1; The second nested loop is responsible for the '^', so the sign will indicate a time.
      Iterator enters the main loop with the value 1, therefore, the first nested loop j = 1, j = 2, j = 3; respectively, will be 3 whitespace. We go to the second nested loop: j = 3 j = 4 j = 5; Accordingly, the three will indicate our sign '^'. And so on…

    1. Well no, It does not help, Yes and should not help. By and large, it only changes the redundant memory.
      When I was looking for some fractional number, prog “hangs”…

  1. float kr, kp;
    int kt = 1, kpn = 0, ktn = 0;
    cout <> kr;
    Kp = No.;

    for (; kp != 0; kt += 2 , kp–)
    {
    kpn = 0;
    while(kp > kpn) {
    cout < ktn) {
    cout << "^"; ktn++;
    }
    cout << endl;

  2. A problem with triangle(3):

    #include
    #include
    #include
    using namespace std;

    int main()
    {
    string triangle = “^”;
    int height, i = 0;
    int eve = 30;
    cout <> height;

    while (i < height)
    {
    cout << setw(eve) << triangle << endl;
    triangle += "^^";
    i ;
    eve++;
    }

    system("pause");
    return 0;
    }

  3. I read the beginning of the While loop and decided 3 the task of using it :) my solution is different from other, but it works (I'm here podredaktirovalchtoby easier and clearer to read here:

    #include
    using namespace std;
    int main()
    {
    int i; // height
    int probel; // the number of spaces
    you TREL = 1; // the number of triangles
    int a = 1; /* Since trel postojano reset, kol – in triangles
    shall designate this variable */
    cout << "введите высоту пирамиды" <> i;
    while(i) {
    probel = i-1; /*Qty probelov i-1 (height = 5) the number of spaces on the top floor = 4 i.t can see for yourself that it works */
    while(probel) {
    cout << " "; // Output Blank
    probel–;
    }

    while(Trel) {
    cout << "^"; // after writing gaps triangles
    Trel–;
    }
    a += 2; /*triangles pattern – 1, 3, 5, 7.. ie increases
    on 2*/
    trel = a; // you follow the number of triangles
    cout << "\n"; // newline (floor of the pyramid);
    i–;
    }

    return 0;
    } /* I tried very hard to hope you enjoyed, obraschyayte no attention to grammar mistakes and RUF. (I'm a newbie)*/

  4. #include
    using namespace std;

    int main()
    {
    setlocale(LC_ALL, “ru”);
    cout << "программа для вывода треугольника"<<endl;
    cout <> height;
    for (int j = 0; j < height; j )
    {
    for (int i = 1; i < height * 2; i )
    {
    if (i height+j)
    cout << " ";
    else
    cout << "^";

    }
    cout << endl;
    }

    }// задачка с треугольником(в vs 2017)

  5. #include “pch.h”
    #include
    using namespace std;

    int main()
    {
    int height;
    cout <> height;
    for (int i = 1; i <= height; i )
    {
    for (int j = 1; j = height – i + 1) && (j <= height + i – 1)) ? cout << "^" : cout << " ";
    }
    cout << endl;
    }
    return 0;
    }

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