Use snprintf() from stdlib.h . Worked for me. double num = 123412341234.123456789; char output[50]; snprintf(output, 50, "%f", ... ... <看更多>

How to convert a string to a double, int, or long int value in C using the atof(), atoi() and atol() functions available in stdlib.h. ... <看更多>

typedef std::complex<double> Complex;. typedef std::valarray<Complex> CArray;. using namespace std;. int main(). {. int t;. cin>>t;. while(t--). {. string ... ... <看更多>