*numstr.h exports string to double and string to integer functions in addition to: i providing support for fraction expressions such as "-781/345". ii. exception handling where invalid characters occur in the input string expression. "56r.67" will throw an exception, whereas, stod() and stoi() functions defined in stdlib will output 56. iii. returns round integers rather than truncating.

Function_name:string_to_double Example: double x = string_to_double(str) str can be any string expression of the form: "+567.4566" positive decimal "-120,687" negative decimal, comma (,) is treated as a decimal point like (.) "-49" negative integer "3001" positive integer "821/503" positive fraction "-185/761" negative fraction any other character witthin the string will throw an exception

Function_name:string_to_integer Example: integer y = string_to_integer(str) str can be any string expression of the form: "+567.4566" positive decimal "-120,687" negative decimal, comma (,) is treated as a decimal point like (.) "-49" negative integer "3001" positive integer "821/503" positive fraction "-185/761" negative fraction any other character witthin the string will throw an exception returns rounded integer.

*numstr.cpp Contains definition of string_to_double(str) and string_to_integer(str).

*example.cpp illustrates usage of string_to_double(str) and string_to_integer(str) functions. This program continually converts user-provided string on console to a double and a rounded integer. To stop, enter 'X' or 'x'.

*Makefile Build script for the example.cpp project *How To Use 1.copy numstr.h to system include folder (/usr/include on debian) 2.open terminal in the numstr directory 3.run make 4.run ./example.x