Dev C++ Srand Cannot Be Used As A Function
 Dev C Srand Cannot Be Used As A Function Examples
 Dev C Srand Cannot Be Used As A Function Definition
 Dev C Srand Cannot Be Used As A Function Test
The srand function in C seeds the pseudo random number generator used by the rand function. The seed for rand function is 1 by default. It means that if no srand is called before rand, the rand function behaves as if it was seeded with srand(1). If I comment out the line with srand, the program will work, but there is no seed so the values will be the same each time.The assignment requires that I use rand, srand, and time to have the dice function be completely random.
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C library function  srand  The C library function void srand(unsigned int seed) seeds the random number generator used by the function rand. Does that change the scope of that function to where it can only be used in the function it is declared in? Global function definitions must still be at namespace scope, which means that the topdown rule still applies. Anything that comes after the function definition can call it, because the definition also acts as a declaration. Using a dev C compiler, the variable timeperiod appears to be considered a function and I'm not sure why. I know this is simple and appreciate any clear or concise answer, or a track to find as such. Compatibility In C, the generation algorithm used by rand is guaranteed to only be advanced by calls to this function. In C, this constraint is relaxed, and a library implementation is allowed to advance the generator on other circumstances (such as calls to elements of ).
Language  
Standard Library Headers  
Freestanding and hosted implementations  
Named requirements  
Language support library  
Concepts library(C++20)  
Diagnostics library  
Utilities library  
Strings library  
Containers library  
Iterators library  
Ranges library(C++20)  
Algorithms library  
Numerics library  
Input/output library  
Localizations library  
Regular expressions library(C++11)  
Atomic operations library(C++11)  
Thread support library(C++11)  
Filesystem library(C++17)  
Technical Specifications 
Common mathematical functions  
Mathematical special functions(C++17)  
Mathematical constants(C++20)  
Floatingpoint environment(C++11)  
Complex numbers  
Numeric arrays  
Pseudorandom number generation  
Compiletime rational arithmetic(C++11)  
Numeric algorithms  
(C++17)  
(C++17)  
Interpolations  
(C++20)  
(C++20)  
Generic numeric operations  
(C++11)  
(C++17)  
(C++17)  
(C++17)  
(C++17)  
(C++17)  
(C++17)  
Bit operations  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20)  
(C++20) 
Uniform random bit generators  
(C++20)  
Engines and engine adaptors  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
Nondeterministic generator  
(C++11)  
Distributions  
Uniform distributions  
(C++11)  
(C++11)  
(C++11)  
Bernoulli distributions  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
Poisson distributions  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
Normal distributions  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
(C++11)  
Sampling distributions  
(C++11)  
(C++11)  
(C++11)  
Seed Sequences  
(C++11)  
C library 
Member functions  
Generation  
Characteristics 
Defined in header <random> 
(since C++11) 
std::random_device
is a uniformlydistributed integer random number generator that produces nondeterministic random numbers.
std::random_device
may be implemented in terms of an implementationdefined pseudorandom number engine if a nondeterministic source (e.g. a hardware device) is not available to the implementation. In this case each std::random_device
object may generate the same number sequence.
Contents

[edit]Member types
Member type  Definition 
result_type  unsignedint 
[edit]Member functions
Construction  
constructs the engine (public member function)[edit]  
(deleted)  the assignment operator is deleted (public member function) 
Generation  
advances the engine's state and returns the generated value (public member function)[edit]  
Characteristics  
obtains the entropy estimate for the nondeterministic random number generator (public member function)[edit]  
[static]  gets the smallest possible value in the output range (public static member function)[edit] 
[static]  gets the largest possible value in the output range (public static member function)[edit] 
[edit]Notes
A notable implementation where std::random_device
is deterministic is old versions of MinGW (bug 338, fixed since GCC 9.2), although replacement implementations exist, such as mingwstdrandom_device. The latest MinGW Versions can be downloaded from GCC with the MCF thread model.
Dev C Srand Cannot Be Used As A Function Examples
[edit]Example
Dev C Srand Cannot Be Used As A Function Definition
Possible output: