This class is available for the OPUS Blackboard API. The initial OPUS 2.0 release is described here

Constructors:

Str_to_num( )	Constructor
~Str_to_num( )	Destructor

Methods:

assign( )	reassign the string value of the object
convert( )	convert string values to numerical datatypes.

Description

This class converts a string value to int, double, long, bool, short datatypes.

Example

  
    #include "str_to_num.h"
  
    using namespace std;
  
    int main(int argc, char* argv[])
    {
	 int num_blocks;
	 string minblocks("50000");
       Str_to_num ns(minblocks);
       ns.convert(num_blocks);
    }
  

See Also:

• None

Str_to_num::Str_to_num - The Str_to_num constructor.

Synopsis

Str_to_num::Str_to_num(
                       const string& s) // I - string to initialize from

Str_to_num::Str_to_num(
                       const char* s) // I - string to initialize from

Description

Constructor for the Str_to_num object. Initializes the object's private members.

Exceptions Thrown

none

Example

  
    Str_to_num ns("3.7");
  

Str_to_num::~Str_to_num - The Str_to_num destructor.

Synopsis

Str_to_num::~Str_to_num()

Description

Destroys the object.

Exceptions Thrown

none

Str_to_num::convert - Append argument to string.

Synopsis

void Str_to_num::convert(int &i)

void Str_to_num::convert(unsigned int &i)

void Str_to_num::convert(long &i)

void Str_to_num::convert(unsigned long &i)

void Str_to_num::convert(bool &b)

void Str_to_num::convert(string &s)

void Str_to_num::convert(char *c)

void Str_to_num::convert (double &f)

void Str_to_num::convert(float &f)

void Str_to_num::convert(short int &i)

void Str_to_num::convert(unsigned short &i)

Description

Converts the string to the required return type.

Returns

    The string converted to the desired return type.

Exceptions Thrown

Bad_val

- String cannot be converted to desired type

Example

  
    Num_in_str ns("3.7");
    float num1;
    ns.covert(num1);
  

Str_to_num::assign - Assign a string to the object.

Synopsis

void Str_to_num::assign(
                        const string& s) // I - string to initialize from

Description

The string value of this object is set to the argument value.

Exceptions Thrown

none

For more information, contact opushelp@stsci.edu

Last modified: 25 April 2000