How to do pick random math operations in a C program?

[rhen18]

Good day!
Im working on a math drill program where the user is asked to answer random math problems that involves the +, -, /, *, and % operators.
Now i dont know how to generate these randomly.
What commands and codes could I use?
So much thanks in advance!
Have a fruitful new year!

[Airslash]

generate a randon int value from 0 to 4 and depending on the value you perform the correct action using a switch statement

pseudo code:

// Generate a random int value in a range
int val = GenerateRandomValue(0,4);

// call the correct action
switch(val)
{
    case 0:
        // do the + stuff
    case 1:
        // do the - stuff
    case 2:
        // do the * stuff
    case 3:
        // do the / stuff
    case 4:
        // do the % stuff
}

[puneetsardana88]

You can use rand

int k=rand()%5;

Use Randomize to get different values for each compilation

[Banfa]

using

rand()%5

is a poor idea because the algorithm often used in the C standard library often produces results with poor randomness in the low order bits of its result.

Read C-Faq Question 13.16