c++linuxgccg++

Problems compiling c++ with console on linux

I'm trying to compile following simple program on a 64-bit machine:

 #include <cstdio>


int main() {

    float a,b,c;
    a = 10.5;
    b = 20.6;
    c = a + b;
    printf("%d  \n", c);
    return 0;
}

I compile it with following console command:

g++ -m32 file.cpp

When I execute the a.out file like this:

./a.out -m32

The result I get is this:

-1610612736

What is going on? What am I doing wrong? I get bogus result when compiling without the -m32 flag. Gcc acts the same way.

Solution

  • Your format specifier is wrong. It should be

    printf("%f  \n", c);