online compiler and debugger for c/c++

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/****************************************************************************** Welcome to GDB Online. GDB online is an online compiler and debugger tool for C, C++, Python, Java, PHP, Ruby, Perl, C#, VB, Swift, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog. Code, Compile, Run and Debug online from anywhere in world. *******************************************************************************/ #include <stdio.h> int main() { //宣告 浮點數 (double) 變量 kg 及 lbs //輸入 kg, 格式為 %lf // 計算lbs //輸出 lbs, 格式為 %.2lf , %及lf 之間的 .2 (點二) 即是兩個小數點位 return 0; }

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