Question

I’m trying to use this piece of code to get the memory usage of my application. However, I get the following error when I try to compile:

error: expected constructor, destructor, or type conversion before '(' token

Here is my code:

#include "sys/types.h
#include "sys/sysinfo.h

using namespace std;
struct sysinfo memInfo;
sysinfo (& memInfo);

Answer 1

Unless you left out significant parts of your code, ut seems you try to call sysinfo(&meminfo) at namespace scope. However, you can’t have a function call statement at namespace scope. Try moving the code into a function, e.g.:

int main() {
    struct sysinfo meminfo;
    sysinfo(&meminfo);
    // ...
}