Random
In the future steps, we will work with multiple arrays simultaneously. It can be a bit painful to fill them manually. Let’s write the program, which will fill the array with random values. To generate a random number, you can use the function rand():
12int a = rand(); cout << a;
Too large, isn’t it? To set restrictions on the range in which you want to get a number, use the symbol %. For instance, the following code will print a random number less than 10:
int a = rand() % 10;
cout << a;
You can also set the start of the required range. Just add +. The following program will write the random number in the range of 10 to 20:
int a = rand() % 20 + 10;
cout << a;
Now we know how to get the random value. Let’s fill the array with random numbers from 1 to 20!
1234for (int i = 0; i < 5; i++){ numbers[i] = rand() % 20 + 1; cout << numbers[i] << " "; }
Random is often used in game development. Let’s play!
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In the future steps, we will work with multiple arrays simultaneously. It can be a bit painful to fill them manually. Let’s write the program, which will fill the array with random values. To generate a random number, you can use the function rand():
12int a = rand(); cout << a;
Too large, isn’t it? To set restrictions on the range in which you want to get a number, use the symbol %. For instance, the following code will print a random number less than 10:
int a = rand() % 10;
cout << a;
You can also set the start of the required range. Just add +. The following program will write the random number in the range of 10 to 20:
int a = rand() % 20 + 10;
cout << a;
Now we know how to get the random value. Let’s fill the array with random numbers from 1 to 20!
1234for (int i = 0; i < 5; i++){ numbers[i] = rand() % 20 + 1; cout << numbers[i] << " "; }
Random is often used in game development. Let’s play!
Tak for dine kommentarer!
