Write a function named binToDec() that accepts an integer parameter whose digits are meant to represent binary (base-2) digits, and converts that integer's representation to decimal (base-10). The function should return the integer value before it was converted. For example, given this code: int a = 101011; int b = binToDec(a); cout << "a->" << a << ", b->" << b << endl; The output is: a->43, b->101011 Constraints: Do not use a string in your solution. Also do not use any built-in base conversion functions from the system libraries. You must program this by "hand".
C++
PE04 - Functions and Prototypes
For this exercise, you'll complete two problems.
Problem 1 - Function Declarations
Write the prototypes for several function calls, deducing the correct signature from the context in PrototypeTester.cpp Do not implement the functions themselves. That is already done. Place the prototypes in pe04.h.
Problem 2 - Write a Function
Write a function named binToDec() that accepts an integer parameter whose digits are meant to represent binary (base-2) digits, and converts that integer's representation to decimal (base-10). The function should return the integer value before it was converted.
For example, given this code:
int a = 101011; int b = binToDec(a); cout << "a->" << a << ", b->" << b << endl;
The output is: a->43, b->101011
Constraints: Do not use a string in your solution. Also do not use any built-in base conversion functions from the system libraries. You must program this by "hand".
pe04.cpp
#define PE04_H
#include <string>
//PLACE YOUR PROTOTYPES BELOW THIS LINE
// PUT YOUR PROTOTYPES ABOVE THIS LINE
#endif
Use the following file:
PrototypeTester.cpp
#include <iostream> #include <string> #include <vector> #include "checker.h" using namespace std; #include "pe04.h" int main() { // A. --------------------------------------------------------- int a = 5; cout << crypt(false, a) << endl; // prints 5, after: a->10 cout << "Expected: 5" << endl; // B. --------------------------------------------------------- string ad = "2.0, 4.0, 3.0, -1.0"; cout << ord(ad) << endl; // prints 3.0, ad->"-1.0, 2.0, 3.0, 4.0" cout << "Expected: 3.0" << endl; // C. --------------------------------------------------------- readLink(2.5, "shorcut.url", true); // D. --------------------------------------------------------- cout << dbClose("Howdy Doody", 42) << endl; // prints "OK" cout << "Expected: OK" << endl; // E. --------------------------------------------------------- bool OK; string s = "sam"; cout << require(s, OK) << endl; // prints "sam"; after-> OK == true, s = "SamSamSam" cout << "Expected: sam" << endl; return 0; }
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