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cscientific-notation

convert numbers in scientific notation to decimal

Write a C program to convert a number in scientific notation to its equivalent decimal form :
Given
8.3e+2 output = 830
2.E-1 output = 0.2
4.3E2 output = 430
Is there any inbuilt library or function in C/C++ which can do this?
or one will have to write his own code, in that case, any easy way to achieve this?

Solution

  • try this

    #include <iostream>
#include <string>


int32_t main(int32_t argc, char *argv[]) {
    std::string str = "8.3e+2";
    std::cout << std::stod(str) << std::endl;
    
    return EXIT_SUCCESS;
}