//This program demonstrates using the C++ time function //to provide a nseed,T for the random number generator. #include <iostream> #include <cstdlib> // Header file needed to use srand and rand #include <ctime>
C rand() function C rand() function - Pseudo-random number generator The rand() function is used to compute a sequence of pseudo-random integers in the range [0, {RAND_MAX}]. The value of the {RAND_MAX} macro shall be at least 32767. Syntax rand() function int rand(void) Parameter...
// Initialize the randomizer using the current timestamp as a seed // (The time() function is provided by the header file) srand(time(NULL)); // Generate random numbers for (int i = 0; i < 10; i++) { int num = rand() % 100 + 1; printf("%d ", num); }Try it Yourself...
例1:rand()函数说明 C // C program to illustrate the use ofrand() function#include<stdio.h>#include<stdlib.h>intmain(){// Generate a random number using therand() functionintvalue =rand();// Print the generated random valueprintf("The Random Value is: %d", value);return0; } 输出 ...
/* maximum value returned by "rand" function */ #define RAND_MAX 0x7fffu 这个是bcc55中的定义,说明这个整数的最大数是0x7fffu,u代表unicode编码。 这样,如果你要产生0~10的10个整数,可以表达为: int N = rand() % 11; 这样,N的值就是一个0~10的随机数,如果要产生1~10,则是这样: ...
// crt_rand.c // This program seeds the random-number generator // with the time, then exercises the rand function. // #include <stdlib.h> #include <stdio.h> #include void SimpleRandDemo( int n ) { // Print n random numbers. int i; for( i = 0; i < n; i++ ) printf(...
In this example, we create a basic c program to demonstrate the use of rand() function.Open Compiler #include <stdio.h> #include <stdlib.h> int main() { // store the random value int rand_value = rand(); // display the random value printf("Random Value: %d\n", rand_value); ...
C 库函数 - rand() C 标准库 - <stdlib.h> 描述 C 库函数 int rand(void) 返回一个范围在 0 到 RAND_MAX 之间的伪随机数。 RAND_MAX 是一个常量,它的默认值在不同的实现中会有所不同,但是值至少是 32767。 声明 下面是 rand() 函数的声明。 int rand(void) 参
MSDN中关于rand的描述"The rand function returns a pseudorandom integer in the range 0 to RAND_MAX (32767). Use the srand function to seed the pseudorandom-number generator before calling rand."rand()产生的伪随机数的范围是0到32767，一般想要产生比如[5,125]的随机数，可以这么写：int...
// crt_rand.c // This program seeds the random-number generator // with the time, then exercises the rand function. // #include <stdlib.h> #include <stdio.h> #include voidSimpleRandDemo(intn ) { // Print n random numbers. inti; for...