[Tutorial] Putting data into a string

[wtd]

Yesterday I wrote a tutorial on extracting data from a string using the istringstream class. Today I'll cover putting data into a string using the ostringstream class.

code:

#include <string> #include <sstream> #include <iostream> int main() {    std::ostringstream output;    int i = 37;    double d = 27.42;    output << i << d;    std::string final_string = output.str();    std::cout << final_string << std::endl;    return 0; }

[rizzix]

thats rather cool. so ehm.. would u suggest using this over sprintf/sscanf ?

[wtd]

If you're writing C code, write C (sprintf, sscanf, etc). If you're writing C++, then write C++.

[rizzix]

ha well .. but i find it easier to do error checking using stdio than using iostreams.

for ex:

code:

int num; char* str = "1000"; if (!sscanf(str, "%d", &i))     printf("error\n");

and the syntax is a lot cleaner.. no operator overloading .. although that shouldn't bug a c++ programmer a lot.. i rather like a consistent behaviour. and the c libraries tend to provide that.

but things would be different if iostream supported exceptions.

[wtd]

The problem with stdio.h is the danger of buffer overflows.

[Tony]

i seem to be having trouble figuring out how to flush ostringstream