rand() gives you random numbers right (c#) - Programmers Heaven

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# rand() gives you random numbers right (c#)

Posts: 4Member
rand() gives you random numbers right? So why does it always give me 41?!!?!

• Posts: 8Member
: rand() gives you random numbers right? So why does it always give me 41?!!?!
:

Actually there r 2 different functions in C which gives u randum numbers when called. Namely:
1) rand();
2) randum(int);
In the first function (i.e., rand();), if u want to get randum numbers with in the range 0-5, then u will have to write the rand(); as follows:

eg.
void main(void)
{
int rand=0;
rand = rand() % 5;
printf("The number generated randumly is %d",rand);
}

Now in the second function (i.e., randum(int);), u will have to give the limit of the range u want. i.e., if u want to get a randum number with in the range 0-5 then u will have to pass the number 5 as the parameter to the function.

eg.
void main(void)
{
int rand=0;
rand = randum(5);
printf("The number generated randumly is %d",rand);
}

Try this out may be u'r problem will get solved. All the best.

• Posts: 8Member
: : rand() gives you random numbers right? So why does it always give me 41?!!?!
: :
:
: Actually there r 2 different functions in C which gives u randum numbers when called. Namely:
: 1) rand();
: 2) randum(int);
: In the first function (i.e., rand();), if u want to get randum numbers with in the range 0-5, then u will have to write the rand(); as follows:
:
: eg.
: void main(void)
: {
: int rand=0;
: rand = rand() % 5;
: printf("The number generated randumly is %d",rand);
: }
:
: Now in the second function (i.e., randum(int);), u will have to give the limit of the range u want. i.e., if u want to get a randum number with in the range 0-5 then u will have to pass the number 5 as the parameter to the function.
:
: eg.
: void main(void)
: {
: int rand=0;
: rand = randum(5);
: printf("The number generated randumly is %d",rand);
: }
:
: Try this out may be u'r problem will get solved. All the best.
:
:
:
:

• Posts: 4Member
Then it must be my code, I always get 41...
[code]
#include "stdio.h"
#include "stdlib.h"
main(){

//Tell them what it is and what to do
printf("Guess the magic number! Enter a number between 1 and 1000.
");
//Make variables, one if they win, another for the number, and one more for there guess
int win;
win = 0;
int ran;
int guess;
//Choose a number
ran = rand() % 1000;
//While they haven't won...
while (win == 0){
scanf("%d", &guess);
if (guess < ran) printf("The magic number is bigger, guess again.

");
if (guess > ran) printf("The magic number is smaller, guess again.

");
if (guess == ran){
printf("You got it right! Huzzah!a

");
}

}

}

[/code]
• Posts: 3,711Member
: Then it must be my code, I always get 41...
: [code]
: #include "stdio.h"
: #include "stdlib.h"
: main(){
:
:
: //Tell them what it is and what to do
: printf("Guess the magic number! Enter a number between 1 and 1000.
");
: //Make variables, one if they win, another for the number, and one more for there guess
: int win;
: win = 0;
: int ran;
: int guess;
: //Choose a number
: ran = rand() % 1000;
: //While they haven't won...
: while (win == 0){
: scanf("%d", &guess);
: if (guess < ran) printf("The magic number is bigger, guess again.

");
: if (guess > ran) printf("The magic number is smaller, guess again.

");
: if (guess == ran){
: printf("You got it right! Huzzah!a

");
: }
:
: }
:
: }
:
: [/code]
:

Use srand().

[code]
#include
#include
#include

int main(void)
{
int i;
time_t t;

srand((unsigned) time(&t));
printf("Ten random numbers from 0 to 99

");
for(i=0; i<10; i++)
printf("%d
", rand() % 100);
return 0;
}
[/code]