Number to floating point

Question

How to convert a number to floating point in c language?
Can someone help me with the code?
I just need the algorithm. I can figure out the code.

Answer 1

int n=3,f
float f=(float)n;

Answer 2

Cast it using this syntax:
(final type)expression;
Eg :
int num = 5;
float res = (float)num;