I'm using C++ in Microsoft Visual Studio 12. I want to pass command line arguments. I have tried listing them in the MSVS's Project/Properties/Debugging/Command Arguments field and I've also tried using the CLIArgsMadeEasy add on but it never works. argc is always 1 where, of course, argv[0] is the app path.
Example: given a program of fred.exe that I would like to launch with three args : a,b,c
i.e. the equivalent of a cmd window line of
fred.exe a b c
I specify the args in the provided edit boxes exactly as:
a b c
using either method described above (MSVS standard or CLIArgsMadeEasy) but when I run they aren't passed.
The code is:
#include <iostream> // for standard I/O
#include <string> // for strings
#include <iomanip> // for controlling float print precision
#include <sstream> // string to number conversion
#include <math.h>
using namespace std;
int main(int argc, char *argv[])
{
...
I have tried this program in my visual studio and it works:
#include <iostream> // for standard I/O
#include <string> // for strings
#include <iomanip> // for controlling float print precision
#include <sstream> // string to number conversion
#include <math.h>
using namespace std;
int main(int argc, char *argv[])
{
for(int i = 1; i < argc; i++)
{
cout << i << ":" << argv[i] << endl;
}
return 0;
}
Related
#include <iostream>
#include <time.h>
#include <string.h>
#include <stdio.h>
int main()
{
string msg;
printf("Enter the message that you wish to display as scroller: ");
getline(cin,msg);
msg=msg+". ";
int x=0;
while(1)
{
Scroll(msg);
wait(100);
system("cls");
x++;
}
cin.get();
return 0;
}
I Have this C code and all strings in the file say 'identifier "string" is undefined'. I tried including <string> instead of <string.h> but it didn't work. Why is it not working?
Add
using namespace std;
After includes (but before main). Or, better, use notion of:
std::string // instead of string
Update: I missed the point of this being C-question. I will leave this answer, but for the sake of formality, use it if you came from Google and you are working with C++.
This is C++ code, not C.
The compiler is probably getting confused because it cannot parse it, so then it finds C-like code and all identifiers do not exist.
The includes should be:
#include <iostream>
#include <ctime>
#include <string>
#include <cstdio>
You are also missing a:
using namespace std;
Plus the definitions for Scroll and wait etc.
An error showed up saying "time" is not a member of "std" for the sentence:
std::srand(std::time(0));
<ctime> and <cstdlib> already included. And the compiler is TDM-GCC MinGW.
I met this error several times and I still can't figure out the reasons.
This is because time(2) is a C standard library function, not a C++ standard library function.
#include <iostream>
#include <ctime>
int main(int argc, char *argv[])
{
auto t = time(nullptr);
std::srand(t);
std::cout << t << "\n";
return 0;
}
Warning: statement has no effect
Line 15
I have to display all the characters from s1 who are found in s2, too.
#include <iostream>
#include <string.h>
#include <ctype.h>
using namespace std;
int main()
{
char s1[250], s2[250];
unsigned int i;
cin.get(s1,250);
cin.get();
cin.get(s2,250);
for(i=0;i<strlen(s2);i++)
tolower(s2[i]);
for(i=0;i<strlen(s1);i++)
if(strchr(s2,tolower(s1[i])))
cout<<s1[i];
return 0;
}
std::tolower takes it's argument by value and returns the result, and therefore doesn't modify the input value.
Hey just found a library i want to use called coni.h to change text colour. But im getting an error in one of the functions: textcolour(RED); It says that it is undefined.
#include <iostream>
#include <string>
#include <conio.h>
#include "Storyline.h"
using namespace std;
int main()
{
Storyline story;
story.Story("Title.txt");
textcolor(MAGENTA+BLINK);
cout << "Hello";
getchar();
getchar();
}
I simply used system("color 0a"); from the "Windows.h". And i now have what i needed.
#include <cstdlib>
using namespace std;
/*
*
*/
int main(int argc, char** argv)
{
cout << "COME AT ME BRO!\n"
return 0;
}
It says cout is unable to resolve identifier
The C++ code assistance is setup properly, I'm just not sure whatelse it could possibly be.
You did not include <iostream> and thus the identifier std::cout is never declared or defined in your program.
You're including the wrong header file. It should be :
#include <iostream>