a c++ program returns different results in two IDE
c++, codeblocks, eclipse, gcc
Solution
You are probably seeing precision errors due to CodeBlocks compiling in 32-bit mode and Eclipse compiling in 64-bit mode:
$ g++ -m32 test.cpp
$ ./a.out
9183
$ g++ -m64 test.cpp
$ ./a.out
9220
Problem
I write the following `c++` program in `CodeBlocks`, and the result was 9183. again I write it in `Eclipse` and after run, it returned 9220. Both use `MinGW`. The correct result is 9183. What's wrong with this code? Thanks. source code: ``` #include <iostream> #include <set> #include <cmath> int main() { using namespace std; set<double> set_1; for(int a = 2; a <= 100; a++) { for(int b = 2; b <= 100; b++) { set_1.insert(pow(double(a), b)); } } cout << set_1.size(); return 0; } ```