The functions in stdlib.h and stdio.h have implementations in libc.so (or libc.a for static linking), which is linked into your executable by default (as if -lc were specified). GCC can be instructed to avoid this automatic link with the -nostdlib or -nodefaultlibs options. The math functions in math.h have implementations in libm.so (or libm.a for … Read more
Here is what may be happening here. You should be able to confirm this by looking at your compiler’s implementation of the pow function: Assuming you have the correct #include’s, (all the previous answers and comments about this are correct — don’t take the #include files for granted), the prototype for the standard pow function … Read more
This wild beast of human imagination delete ship1, ship2; deletes ship2, but doesn’t delete ship1. Comma here is treated as sequence (comma) operator, and result of such expression is result of last sub-expression. Your function always returns 1. You probably meant something like this int shipdetcol(spaceship &ship1, spaceship &ship2, float colrange) { return colrange > … Read more