How to read a float from binary file in C?

Question

Everything I\'m finding via google is garbage... Note that I want the answer in C, however if you supplement your answer with a C++ solutio

Answer 1

float f;
if(read(fd,&f,sizeof(f))==sizeof(f))
    printf("%f\n",f);
else
    printf("oops\n");

Provided that it's written as compatible binary representation.

read for file descriptors, fread for FILE*s and istream::read for c++ iostreams. Pick whatever pleases you:

read(fd,&f,sizeof(f))==sizeof(f)

fread(&f,sizeof(f),1,fp)==1

fin.read((char*)&f,sizeof(f)).gcount()==sizeof(f)