Why do we use srand ((time (NULL))?

Asked by Last Modified  

1 Answer

Learn C Language +3 C Language Programming Advanced C++ Basic C++

Follow 1
Answer

Please enter your answer

Kishore

You need to under the concept and definition of function and you must visualize how does it work.Before going to srand, try to see subset of it, its rand1. rand -- provide random number generator (as its int, so range falls under 0 - 327672. srand - its "seed"random number - that means used to set the...
read more
You need to under the concept and definition of function and you must visualize how does it work.Before going to srand, try to see subset of it, its rand1. rand -- provide random number generator (as its int, so range falls under 0 - 327672. srand - its "seed"random number - that means used to set the starting value (seed), for generating.So, its set seed(1) as default and on top of it rand() generates random number between seed and range <32 ,767>3. Time - is every changing at every second, just think if you are sending current time vallue as seed -> to srand (which initializes) -> inturn -> rand() get calls. Now, the range of random generation number is less.4. So instead of some static integer , as end user we want to supply, make use of the computer's internal clock to controlthe choice of the seed.Hope it helps. read less
Comments
Dislike Bookmark

Related Questions

What is the structure of a C program?
A basic structure of a C program typically consists of: 1. **Preprocessor Directives:** These are lines of code that begin with a `#` symbol. They are instructions to the compiler to include certain...
Snehal
0 0
5
How do I get 6 power 13 in c language?
In the C programming language, you can calculate the power of a number using the pow() function from the <math.h> library. To find 6 raised to the power of 13, you would write a C program that includes...
Raju
0 0
6
What is the difference between ++var and var++?
First one is present increment and second one is the post incremental t of the variable. Both increases value of var to one. The difference between pre and post increment is given in below example. Int...
Chittaranjan
What are the flaws of the C programming language?
The C programming language, while powerful and widely used, has some inherent flaws. One notable limitation is its lack of built-in support for dynamic memory management and bounds checking. This can lead...
Sounak
0 0
7
Are C and C++ the same?
No
Sangeetha
0 0
9

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Learn to code from an Engineer || Linear search || Python

Syed Chintu

0 0
0
Set 0 To Kth Bit In A Variable
The following code snippet Set 0 to Kth Bit in an variable #include int UnsetBitValue(int n, int k);int main(){ printf("%d\n\n",UnsetBitValue(255,6)); return 0;}// Set kth bit to zeroint UnsetBitValue(int...

Umasankar Natarajan

0 0
0
Operators in C
Operators in C Operator: An operator is a symbol that tells the compiler to perform certain mathematical or logical calculations. Operators are used in programs to manipulate data and variables. The...

Venkateswararao S.

0 0
0
Swapping variable contents using C
/* WAP to swap the content of variables using C*/ //Header files #include<stdio.h>#include<conio.h> //Main function void main(){ //Variable declaration of type integer int a,b,c; //function...

Salim ahmed Ansari

0 0
0
C Program-Error Handling[Program Exit Status]
//Header files #include<stdio.h>#include<conio.h>#include<stdlib.h> //Main Function void main(){ int dividend=20; int divisor=5; int quotient; //Function for clearing screen clrscr();...

Salim ahmed Ansari

0 0
0

Recommended Articles

Brilliant Academy, a reputed B. Tech Tuition...

Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...

Read full article >

Lasya Infotech: An educational Training...

Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...

Read full article >

8 Hottest IT Careers of 2014!

Whether it was the Internet Era of 90s or the Big Data Era of today, Information Technology (IT) has given birth to several lucrative career options for many. Though there will not be a “significant" increase in demand for IT professionals in 2014 as compared to 2013, a “steady” demand for IT professionals is rest assured...

Read full article >

What is Applications Engineering all about?

Applications engineering is a hot trend in the current IT market.  An applications engineer is responsible for designing and application of technology products relating to various aspects of computing. To accomplish this, he/she has to work collaboratively with the company’s manufacturing, marketing, sales, and customer...

Read full article >

Find C Language Classes near you
C Language Classes in Bangalore
C Language Classes in Hyderabad
C Language Classes in Delhi
C Language Classes in Pune
C Language Classes in Chennai
C Language Classes in Mumbai
C Language Classes in Kolkata
C Language Classes in Noida
C Language Classes in Gurgaon
C Language Classes in Ghaziabad

Looking for C Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you