Unix errors running C++ program involving struct tm - c++

Question

I wrote an Inventory program for groceries in C++ using Visual Studio 2012 and
everything runs smoothly and as expected. A file is read in as a command line argument and that is used to fill a deque with Grocery objects. A function that I used to check if a Grocery object was expiring soon used time_t and struct tm. When trying to run my program on Unix, I get an error involving fstream
Here are the lines of code where I am getting the errors:
int main (int argc, char** argv) {
deque<Grocery> groceries;
deque<Grocery>::iterator iter;
string filename = "";
if (argc > 1) {
filename = argv[1];
fstream fileData;
fileData.open(filename, ios::in | ios::out); //**error**
//error check
if (!fileData) {
cout << "Error openeing file. Program aborting.\n";
return 1;
}
string name;
string expDate;
string type;
string quantity;
while (!fileData.eof()) {
Grocery temp;
getline (fileData,name,'\t');
temp.setName(name);
getline (fileData,expDate,'\t');
temp.setExpDate(expDate);
getline (fileData,type,'\t');
temp.setType(type);
getline (fileData, quantity,'\n');
temp.setQuantity(atoi (quantity.c_str()));
groceries.push_back(temp);
}
fileData.close();
}
return 0;
}
Errors when trying to run program in Unix
$ make all
g++ -c Grocery.cpp
g++ -c Inventory.cpp
Inventory.cpp: In function âint main(int, char**)â:
Inventory.cpp:24:45: error: no matching function for call to âstd::basic_fstream<char>::open(std::string&, std::_Ios_Openmode)â
fileData.open(filename, ios::in | ios::out);
^
Inventory.cpp:24:45: note: candidate is:
In file included from Inventory.cpp:3:0:
/opt/rh/devtoolset-2/root/usr/include/c++/4.8.1/fstream:886:7: note: void std::basic_fstream<_CharT, _Traits>::open(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode]
open(const char* __s,
^
/opt/rh/devtoolset-2/root/usr/include/c++/4.8.1/fstream:886:7: note: no known conversion for argument 1 from âstd::string {aka std::basic_string<char>}â to âconst char*â
make: *** [Inventory.o] Error 1
Makefile
MKFILE = Makefile
#
# Definitions of list of files:
#
HSOURCES = Grocery.h
CSOURCES = Grocery.cpp Inventory.cpp
ETCSRC = README ${MKFILE}
EXECBIN = main
ALLCSRC = ${CSOURCES}
OBJECTS = ${ALLCSRC:.cpp=.o}
ALLSRC = ${ETCSRC} ${HSOURCES} ${CSOURCES}
LISTSRC = ${ALLSRC}
#
# Definitions of the compiler and compilation options:
#
GCC = g++
#
# The first target is always ``all'', and hence the default,
# and builds the executable images
#
all : ${EXECBIN}
#
# Build the executable image from the object files.
#
${EXECBIN} : ${OBJECTS}
${GCC} -o ${EXECBIN} ${OBJECTS}
#
# Build an object file form a C source file.
#
%.o : %.cpp
${GCC} -c $<
#
# Clean and spotless remove generated files.
#
clean :
- rm -rf ${EXECBIN} ${OBJECTS}
FIXED
Answer listed below

Answer 1

Inventory.cpp:24:45: error: no matching function for call to âstd::basic_fstream<char>::open(std::string&, std::_Ios_Openmode)â
fileData.open(filename, ios::in | ios::out);
basic_fstream(const string&, ios_base::openmode) constructor is only available in C++11 mode.
You are compiling your code in C++98 mode. Pass -std=gnu++11 to g++ when compiling.

Answer 2

I think you need a clean build.
Since you have the declarations in header file, and you might have changed the expDate from type tm to tm*.