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education/software development/ECE1400/C.md
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@ -111,6 +111,12 @@ If an ordinary character is included in the pattern matching string, it will be
## `rand` ## `rand`
```c ```c
// `srand` creates a seed to use for rng // `srand` creates a seed to use for rng
seed = srand(time(NULL)); srand(time(NULL));
// `rand` generates a random integer between 0 and `RAND_MAX`
// To pick a number between a particular range, you can use the modulo
// operator.
// The below example picks a number between zero and four.
int num = rand() % 4;
``` ```