C stdlib rand() Function
Example
Display 10 random numbers between 1 and 100:
// Initialize the randomizer using the current timestamp as a seed
// (The time() function is provided by the <time.h> header file)
srand(time(NULL));
// Generate random numbers
for (int i = 0; i < 10; i++) {
int num = rand() % 100 + 1;
printf("%d ", num);
}Definition and Usage
The rand() function returns a random non-negative integer.
Numbers generated by this function are pseudo-random, which means that it is possible to predict them with
enough information. To make the numbers appear more random they should be seeded using the srand() function with a different value each
time the program runs.
The rand() function is defined in the <stdlib.h> header file.
Syntax
rand()Technical Details
| Returns: | An int value representing a random integer. |
|---|