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Write overload functions in c plus plus to convert an ascii string to an int and to convert an ascii string to float?
Himaniaggarwal
Overloads cannot differ by return type alone. The only way to achieve this is to use output arguments. Since the implementation is exactly the same regardless of the output type, you can use a function template to generate the overloads.
#include<iostream>
#include<sstream>
template<typename T>
bool convert(std::string& s, T& value)
{
std::stringstream ss;
ss << s;
if (ss >> value)
return true;
return false;
}
int main()
{
int i;
float f;
std::string s {"3.14"};
if (convert (s, i))
std::cout << '"' << s << "" = " << i << std::endl;
if (convert (s, f))
std::cout << '"' << s << "" = " << f << std::endl;
}
Output:
"3.14" = 3
"3.14" = 3.14
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