tr24731

In the mold of a previous question I asked about the so-called safe library deprecations , I find myself similarly bemused as to why fopen() should be deprecated. The function takes two C strings, and returns a FILE* ptr, or NULL on failure. Where are the thread-safety problems / string overrun problems? Or is it something else? Thanks in advance There is an official ISO/IEC JTC1/SC22/WG14 (C Language) technical report TR24731-1 (bounds checking interfaces) and its rationale available at: http://www.open-std.org/jtc1/sc22/wg14 There is also work towards TR24731-2 (dynamic allocation functions)

_s functions, such as scanf_s , printf_s seems to be optional standard. MSVC has implemented these functions, but gcc hasn't. Is there specific reason for not implementing secure functions? Is scanf of gcc secure enough? The _s functions are optional ( Annex K of the C11 standard ). They're widely regarded as 'not very beneficial'. In the answers to my question Do you use the TR-24731 "safe" functions? , you can find information about where there are problems with the standard specification — such as crucial differences between the standard and Microsoft's implementation. TR 24731-1 was a

I was just messing around with C and ran into this small problem. As you can see from my output I getting '╠' this character. #include <stdio.h> int main(void) { char c; printf("Do you want to be X's or O's?\n"); scanf_s("%c", &c); printf("You chose %c\n", c); } See program output You are misusing scanf_s() . Microsoft compilers may warn you to use their secure extensions (aka c11 annex k). But, be careful if you do so. scanf_s() is not a direct replacement for scanf() . In this case you have to pass the size of the output buffer as an extra argument. char c; scanf_s("%c", &c, 1); Having to

What is the difference between scanf and scanf_s ? In the university I have been taught and I am using scanf , but at my personal computer Visual Studio keeps sending this warning. error C4996: 'scanf': This function or variable may be unsafe. Consider using scanf_s instead. And I have to change all scanf to scanf_s or the program won't build. (I am using Visual Studio 2013) ironslab It is a function that belongs specifically to the Microsoft compiler. scanf originally just reads whatever console input you type and assign it to a type of variable. If you have an array called first_name[5] and