Nothing shows in the console window.

[George93]

Hi Guys, I'm quite new to C++ and I'm trying to write a program that takes the number from the command line and converts it to a hexadecimal. There are no errors when i compile it but when i run it, the product of the conversion dosent show. In the command line i have "22222 b10"

I don't get why nothing appears in the console window.

Any help would be greatly appreciated!

My code is below.

----------------------------

#include "stdafx.h"
#include <iostream>
#include <cstdlib>
#include <time.h>
#include <errno.h>
#include <math.h>
using namespace std;

int main(int argc, char* argv[])
{

int base10 = atoi(argv[1]), temp;


if (strcmp(argv[2], "b2") == 0){
while (base10 != 0){
cout << base10 % 2;
base10 = base10 / 2;
}
}

else if (strcmp(argv[2], "b3") == 0){
while (base10 != 0){
cout << base10 % 3;
base10 = base10 / 3;
}
}

else if (strcmp(argv[2], "b4") == 0){
while (base10 != 0){
cout << base10 % 4;
base10 = base10 / 4;
}
}

else if (strcmp(argv[2], "b5") == 0){
while (base10 != 0){
cout << base10 % 5;
base10 = base10 / 5;
}
}

else if (strcmp(argv[2], "b6") == 0){
while (base10 != 0){
cout << base10 % 6;
base10 = base10 / 6;
}
}

else if (strcmp(argv[2], "b7 ") == 0){
while (base10 != 0){
cout << base10 % 7;
base10 = base10 / 7;
}
}

else if (strcmp(argv[2], "b8") == 0){
while (base10 != 0){
cout << base10 % 8;
base10 = base10 / 8;
}
}

else if (strcmp(argv[2], "b9") == 0){
while (base10 != 0){
cout << base10 % 9;
base10 = base10 / 9;
}
}

else if (strcmp(argv[2], "b10") == 0){
while (base10 != 0){
cout << base10 % 10;
base10 = base10 / 10;
}
}

else if (strcmp(argv[2], "b11") == 0){
while (base10 != 0){
temp = base10 % 11;
if (temp == 10) {
cout << "A";
}
else {
cout << temp;
}
base10 = base10 / 11;
}
}

else if (strcmp(argv[2], "b12") == 0){
while (base10 != 0){
temp = base10 % 12;
if (temp == 10){
cout << "A";
}
else if (temp == 11) {
cout << "B";
}
else {
cout << temp;
}
base10 = base10 / 12;
}
}

else if (strcmp(argv[2], "b13") == 0){
while (base10 != 0){
temp = base10 % 13;
if (temp == 10){
cout << "A";
}
else if (temp == 11){
cout << "B";
}
else if (temp == 12){
cout << "C";
}
else {
cout << temp;
}
base10 = base10 / 13;
}
}

else if (strcmp(argv[2], "b14") == 0){
while (base10 != 0){
temp = base10 % 14;
if (temp == 10){
cout << "A";
}
else if (temp == 11){
cout << "B";
}
else if (temp == 13){
cout << "C";
}
else if (temp == 13){
cout << "D";
}
else {
cout << temp;
}
base10 = base10 / 14;
}
}

else if (strcmp(argv[2], "b15") == 0){
while (base10 != 0){
temp = base10 % 15;
if (temp == 10){
cout << "A";
}
else if (temp == 11){
cout << "B";
}
else if (temp == 12){
cout << "C";
}
else if (temp == 13){
cout << "D";
}
else if (temp == 14){
cout << "E";
}
else {
cout << temp;
}
base10 / 15;
}
}

else if (strcmp(argv[2], "b16") == 0){
while (base10 != 0){
temp = base10 % 16;
if (temp == 10){
cout << "A";
}
else if (temp == 11){
cout << "B";
}
else if (temp == 12){
cout << "C";
}
else if (temp == 13){
cout << "D";
}
else if (temp == 14){
cout << "E";
}
else if (temp == 15){
cout << "F";
}
else {
cout << temp;
}
base10 = base10 / 16;
}
}







system("pause");
return (0);
}[/code]

[George93]

Disregard the "[/code]" at the bottom.

[ButchCavendish]

Hi George..
Please first write your code in proper format

[George93]

Will do, if i knew what that meant. Please explain haha

[S G H]

Edit your first post, and place a [code] at the top of your code.
You probably need to copy-paste your code again, since spaces and tabbing aren't preserved.

[George93]

Cant you still read it how it is now though?
I'll still redo my question in proper format now though

[TarikNeaj]

http://www.cplusplus.com/articles/jEywvCM9/

[coder777]

This int base10 = atoi(argv[1]), temp; make no sense. What is temp? Just remove it.

[S G H]

There should be an "edit" button in the bottom-right.
Anyways you have a lot of repeating code there.

You can get the base number as follows:

#include <iostream>
#include <cstdlib>
int main(int argc, char** argv)
{
    if((argc != 3) || (argv[2][0] != 'b'))
    {
        std::cout << "Invalid arguments." << std::endl;
        return 1;
    }
    int number = std::atoi(argv[1]);
    int base = std::atoi(argv[2]+1);
    // base will be the number after the 'b'
    if((base <= 1) || (base > 16))
    {
        std::cout << "Invalid number base" << std::endl;
        return 1;
    }
    else if(number < 0)
    {
        std::cout << "Number is negative" << std::endl;
        return 1;
    }
    else if((base == 10) || (number < base && base < 10) || (number < 10 && base > 10))
        std::cout << number << std::endl;
    else
        std::cout << "Please compute base " << base << " for " << number << std::endl;
    return 0;
}