C++ hayotiy misollar
Amaliy misollar
Bu sahifada real loyihalarda qo‘llaniladigan amaliy misollar ro‘yxati keltirilgan.
O‘zgaruvchilar va ma’lumot tiplari
Misol
Kollej talabasining turli ma’lumotlarini saqlash uchun o‘zgaruvchilardan foydalaning:
// Student data
int studentID = 15;
int studentAge = 23;
float studentFee = 75.25;
char studentGrade = 'B';
// Print variables
cout << "Student ID: " << studentID << "\n";
cout << "Student Age: " << studentAge << "\n";
cout << "Student Fee: " << studentFee << "\n";
cout << "Student Grade: " << studentGrade << "\n";
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Misol
To‘g‘ri to‘rtburchakning yuzini (uzunligi va enini ko‘paytirib) hisoblang:
// Create integer variables
int length = 4;
int width = 6;
int area;
// Calculate the area of a rectangle
area = length * width;
// Print the variables
cout << "Length is: " << length << "\n";
cout << "Width is: " << width << "\n";
cout << "Area of the rectangle is: " << area << "\n";
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Misol
Bir nechta mahsulotning umumiy narxini hisoblash va chiqarish uchun turli ma’lumot tiplaridan foydalaning:
// Create variables of different data types
int items = 50;
double cost_per_item = 9.99;
double total_cost = items * cost_per_item;
char currency = '$';
// Print variables
cout << "Number of items: " << items << "\n";
cout << "Cost per item: " << cost_per_item << "" << currency << "\n";
cout << "Total cost = " << total_cost << "" << currency << "\n";
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C++ tilidagi o‘zgaruvchilar va ma’lumot tiplari haqida batafsil o‘rganish uchun O‘zgaruvchilar va Ma’lumot tiplari boblarimizga o‘ting.
Stringlar
Misol
Oddiy salomlashuv xabarini yaratish uchun stringlardan foydalaning:
string message = "Good to see you, ";
string fname = "John";
cout << greeting + fname;
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C++ tilidagi stringlar haqida batafsil o‘rganish uchun Stringlar bobimizga o‘ting.
Boolean qiymatlar
Misol
Insonning ovoz berish uchun yoshi yetarli ekanligini aniqlang:
int myAge = 25;
int votingAge = 18;
cout << (myAge >= votingAge); // returns 1 (true), meaning 25 year olds are allowed to vote!
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C++ tilidagi boolean qiymatlar haqida batafsil o‘rganish uchun Boolean qiymatlar bobimizga o‘ting.
Shartlar (If..Else)
Misol
Foydalanuvchi to‘g‘ri kod kiritganini tekshiring:
int doorCode = 1337;
if (doorCode == 1337) {
cout << "Correct code.\nThe door is now open.\n";
} else {
cout << "Wrong code.\nThe door remains closed.\n";
}
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Misol
Son musbat yoki manfiy ekanligini aniqlang:
int myNum = 10; // Is this a positive or negative number?
if (myNum > 0) {
cout << "The value is a positive number.\n";
} else if (myNum < 0) {
cout << "The value is a negative number.\n";
} else {
cout << "The value is 0.\n";
}
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Misol
Insonning ovoz berish uchun yoshi yetarli ekanligini aniqlang:
int myAge = 25;
int votingAge = 18;
if (myAge >= votingAge) {
cout << "Old enough to vote!\n";
} else {
cout << "Not old enough to vote.\n";
}
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Misol
Sonning juft yoki toq ekanligini aniqlang:
int myNum = 5;
if (myNum % 2 == 0) {
cout << myNum << " is even.\n";
} else {
cout << myNum << " is odd.\n";
}
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C++ tilidagi shartlar haqida batafsil o‘rganish uchun If..Else bobimizga o‘ting.
switch
Misol
Hafta kuni raqamidan foydalanib, hafta kuni nomini aniqlang va chiqaring:
int day = 4;
switch (day) {
case 1:
cout << "Monday";
break;
case 2:
cout << "Tuesday";
break;
case 3:
cout << "Wednesday";
break;
case 4:
cout << "Thursday";
break;
case 5:
cout << "Friday";
break;
case 6:
cout << "Saturday";
break;
case 7:
cout << "Sunday";
break;
}
// Outputs "Thursday" (day 4)
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C++ tilidagi switch haqida batafsil o‘rganish uchun switch bobimizga o‘ting.
while sikllari
Misol
Oddiy "teskari sanoq" dasturini yarating:
int countdown = 3;
while (countdown > 0) {
cout << countdown << "\n";
countdown--;
}
cout << "Happy New Year!!\n";
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Misol
0 dan 10 gacha (10 ham kiradi) faqat juft sonlarni chiqaradigan dastur yarating:
int i = 0;
while (i <= 10) {
cout << i << "\n";
i += 2;
}
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Misol
Sonning raqamlarini teskari tartibga keltirish uchun while siklidan foydalaning:
// A variable with some specific numbers
int numbers = 12345;
// A variable to store the reversed number
int revNumbers = 0;
// Reverse and reorder the numbers
while (numbers) {
// Get the last number of 'numbers' and add it to 'revNumbers'
revNumbers = revNumbers * 10 + numbers % 10;
// Remove the last number of 'numbers'
numbers /= 10;
}
cout << "Reversed numbers: " << revNumbers << "\n";
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Misol
Yatzy o‘yinini o‘ynash uchun while siklidan if else operatori bilan birga foydalaning:
int dice = 1;
while (dice <= 6) {
if (dice < 6) {
cout << "No Yatzy\n";
} else {
cout << "Yatzy!\n";
}
dice = dice + 1;
}
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C++ tilidagi while sikllari haqida batafsil o‘rganish uchun while sikli bobimizga o‘ting.
for sikllari
Misol
100 gacha o‘ntalab sanaydigan dastur yaratish uchun for siklidan foydalaning:
for (int i = 0; i <= 100; i += 10) {
cout << i << "\n";
}
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Misol
0 dan 10 gacha bo‘lgan faqat juft qiymatlarni chiqaradigan dastur yaratish uchun for siklidan foydalaning:
for (int i = 0; i <= 10; i = i + 2) {
cout << i << "\n";
}
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Misol
Faqat toq sonlarni chiqaradigan dastur yaratish uchun for siklidan foydalaning:
for (int i = 1; i <= 10; i = i + 2) {
cout << i << "\n";
}
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Misol
2 ning 512 gacha bo‘lgan darajalarini chiqarish uchun for siklidan foydalaning:
for (int i = 2; i <= 512; i *= 2) {
cout << i << "\n";
}
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Misol
Berilgan sonning (bu misolda 2 ning) ko‘paytirish jadvalini chiqaradigan dastur yaratish uchun for siklidan foydalaning:
int number = 2;
int i;
// Print the multiplication table for the number 2
for (i = 1; i <= 10; i++) {
cout << number << " x " << i << " = " << number * i << "\n";
}
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C++ tilidagi for sikllari haqida batafsil o‘rganish uchun for sikli bobimizga o‘ting.
Massivlar
Misol
Turli yoshlarning o‘rtacha qiymatini hisoblaydigan dastur yarating:
// An array storing different ages
int ages[8] = {20, 22, 18, 35, 48, 26, 87, 70};
float avg, sum = 0;
int i;
// Get the length of the array
int length = sizeof(ages) / sizeof(ages[0]);
// Loop through the elements of the array
for (int age : ages) {
sum += age;
}
// Calculate the average by dividing the sum by the length
avg = sum / length;
// Print the average
cout << "The average age is: " << avg << "\n";
O‘zingiz sinab ko‘ring »
Misol
Turli yoshlar orasidan eng kichigini topadigan dastur yarating:
// An array storing different ages
int ages[8] = {20, 22, 18, 35, 48, 26, 87, 70};
int i;
// Get the length of the array
int length = sizeof(ages) / sizeof(ages[0]);
// Create a variable and assign the first array element of ages to it
int lowestAge = ages[0];
// Loop through the elements of the ages array to find the lowest age
for (int age : ages) {
if (lowestAge > age) {
lowestAge = age;
}
}
// Print the lowest age
cout << "The lowest age is: " << lowestAge << "\n";
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C++ tilidagi massivlar haqida batafsil o‘rganish uchun Massivlar bobimizga o‘ting.
Strukturalar (structs)
Misol
Avtomobillar haqidagi turli ma’lumotlarni saqlash va chiqarish uchun strukturadan foydalaning:
// Declare a structure named "car"
struct car {
string brand;
string model;
int year;
};
int main() {
// Create a car structure and store it in myCar1;
car myCar1;
myCar1.brand = "BMW";
myCar1.model = "X5";
myCar1.year = 1999;
// Create another car structure and store it in myCar2;
car myCar2;
myCar2.brand = "Ford";
myCar2.model = "Mustang";
myCar2.year = 1969;
// Print the structure members
cout << myCar1.brand << " " << myCar1.model << " " << myCar1.year << "\n";
cout << myCar2.brand << " " << myCar2.model << " " << myCar2.year << "\n";
return 0;
}
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C++ tilidagi strukturalar haqida batafsil o‘rganish uchun Strukturalar bobimizga o‘ting.
Funksiyalar
Misol
Qiymatni Farengeytdan Selsiyga o‘tkazadigan dastur yarating:
// Function to convert Fahrenheit to Celsius
float toCelsius(float fahrenheit) {
return (5.0 / 9.0) * (fahrenheit - 32.0);
}
int main() {
// Set a fahrenheit value
float f_value = 98.8;
// Call the function with the fahrenheit value
float result = toCelsius(f_value);
// Print the fahrenheit value
cout << "Fahrenheit: " << f_value << "\n";
// Print the result
cout << "Convert Fahrenheit to Celsius: " << result << "\n";
return 0;
}
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Misol
Sonni ikki baravar oshiradigan dastur yarating:
int doubleGame(int x) {
return x * 2;
}
int main() {
for (int i = 1; i <= 5; i++) {
cout << "Double of " << i << " is " << doubleGame(i) << endl;
}
return 0;
}
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C++ tilidagi funksiyalar haqida batafsil o‘rganish uchun Funksiyalar bobimizga o‘ting.
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