Thread: error with xcode on win7

This very simple c++ code ran correctly on my mac with xcode. int a got printed as 0. I ran the same code on a win 7 machine with recently installed code::blocks and a was printed as 54. As a matter of fact when I gave other values to int a then the int a was still printed as 54 ???????

Code:

#include <iostream>
using namespace std;
int main( )
{
cout << "This is my first try" << endl;
int a,b;
a=0;
b=3;
cout << "a is  " << a << endl;

return 0;

}

sorry for the trouble. the statement on the win system was a-0; and not a=0; I assume a-0; is valid but it sure is meaningless. Bad eyes and small printing cause lots of programming problems! Lou

Originally Posted by louxx

sorry for the trouble. the statement on the win system was a-0; and not a=0; I assume a-0; is valid but it sure is meaningless. Bad eyes and small printing cause lots of programming problems! Lou

Always turn on all warnings of the compiler

Code:

#include <iostream>
using namespace std;
int main( ) {
    cout << "This is my first try" << endl;
    int a,b;
    a-0; // <<== your typo
    b=3;
    cout << "a is  " << a << endl;
    return 0;
}


My compiler output
[liveuser@localhost CTests]$ g++ tst.cc -Wall
tst.cc: In function ‘int main()’:
tst.cc:7:4: warning: statement has no effect [-Wunused-value]
tst.cc:6:7: warning: variable ‘b’ set but not used [-Wunused-but-set-variable]
tst.cc:9:21: warning: ‘a’ is used uninitialized in this function [-Wuninitialized]

Kurt