Is the srand(time(0)) really makes distribution of values more random?

Question

Without srand(time(0))

0: 0.099813
1: 0.100125
2: 0.099907
3: 0.100691
4: 0.100209
5: 0.099232
6: 0.100194
7: 0.099684
8: 0.099754
9: 0.100392

with srand(time(0)) :

0:0.100006
1:0.100336
2:0.099907
3:0.100045
4:0.100254
5:0.099686
6:0.099776
7:0.099972
8:0.099982
9:0.100037

https://code.sololearn.com/c297oWG1864l/?ref=app

Answer 1

srand() doesn't necessarily make the distribution more random. It is used to randomise the seed for the built-in RNG algorithm. Without providing a seed, rand() would simply return the same values for each run. (which, in most cases, would probably not be what you want)