What is the behavior when a new C programming language standard is official, the old standard is ALWAYS...
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Are there any deprecation between c89/90 c99 c11 c18? Or only recommendation of avoid certain function like strlen and use a "safer" strnlen_s?
c
asked Nov 22 at 16:16
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Are there any deprecation between c89/90 c99 c11 c18? Or only recommendation of avoid certain function like strlen and use a "safer" strnlen_s?
c
asked Nov 22 at 16:16
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Yes; thegetsfunction is the biggest example
– Govind Parmar
Nov 22 at 16:17
1
...which is mentioned in the Wikipedia article for C11.
– Robert Harvey♦
Nov 22 at 16:18
1
getsis not only depracated in C11, but in fact completely removed. The changes can be found in the appendixes of each standard document.
– DeiDei
Nov 22 at 16:26
2
Possible duplicate of Compatibility of C89/C90, C99 and C11
– Swordfish
Nov 22 at 16:26
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Are there any deprecation between c89/90 c99 c11 c18? Or only recommendation of avoid certain function like strlen and use a "safer" strnlen_s?
c
asked Nov 22 at 16:16
xpto
76321127
Are there any deprecation between c89/90 c99 c11 c18? Or only recommendation of avoid certain function like strlen and use a "safer" strnlen_s?
c
c
asked Nov 22 at 16:16
xpto
76321127
asked Nov 22 at 16:16
xpto
76321127
asked Nov 22 at 16:16
xpto
76321127
asked Nov 22 at 16:16
xpto
76321127
asked Nov 22 at 16:16
xpto
76321127
76321127
2
Yes; thegetsfunction is the biggest example
– Govind Parmar
Nov 22 at 16:17
1
...which is mentioned in the Wikipedia article for C11.
– Robert Harvey♦
Nov 22 at 16:18
1
getsis not only depracated in C11, but in fact completely removed. The changes can be found in the appendixes of each standard document.
– DeiDei
Nov 22 at 16:26
2
Possible duplicate of Compatibility of C89/C90, C99 and C11
– Swordfish
Nov 22 at 16:26
add a comment |
2
Yes; thegetsfunction is the biggest example
– Govind Parmar
Nov 22 at 16:17
1
...which is mentioned in the Wikipedia article for C11.
– Robert Harvey♦
Nov 22 at 16:18
1
getsis not only depracated in C11, but in fact completely removed. The changes can be found in the appendixes of each standard document.
– DeiDei
Nov 22 at 16:26
2
Possible duplicate of Compatibility of C89/C90, C99 and C11
– Swordfish
Nov 22 at 16:26
2
2
Yes; the
gets function is the biggest example– Govind Parmar
Nov 22 at 16:17
Yes; the
gets function is the biggest example– Govind Parmar
Nov 22 at 16:17
1
1
...which is mentioned in the Wikipedia article for C11.
– Robert Harvey♦
Nov 22 at 16:18
...which is mentioned in the Wikipedia article for C11.
– Robert Harvey♦
Nov 22 at 16:18
1
1
gets is not only depracated in C11, but in fact completely removed. The changes can be found in the appendixes of each standard document.– DeiDei
Nov 22 at 16:26
gets is not only depracated in C11, but in fact completely removed. The changes can be found in the appendixes of each standard document.– DeiDei
Nov 22 at 16:26
2
2
Possible duplicate of Compatibility of C89/C90, C99 and C11
– Swordfish
Nov 22 at 16:26
Possible duplicate of Compatibility of C89/C90, C99 and C11
– Swordfish
Nov 22 at 16:26
add a comment |
2 Answers
2
active
oldest
votes
up vote
2
down vote
accepted
Newer standards are not guaranteed to be compatible, even though the committee has a (far too) strong focus on backwards compatibility.
- C90 is not completely compatible with newer versions.
- C11 and C17 are compatible with C99, apart from some corrections.
Official recommendations of functions to avoid are found in:
- C17 6.11 Future language directions, and
- C17 6.32 Future library directions
Notably, the official recommendations are free from misguided Microsoft propaganda regarding the string handling functions etc.
Unofficial recommendations by yours sincerely here:
Which functions from the standard library must (should) be avoided?.
answered Nov 22 at 16:37
Lundin
105k17154259
add a comment |
up vote
1
down vote
The following code is valid in C89, deprecated under C99, and invalid in C11 and further, due to its use of the unsafe function gets:
#include <stdio.h>
int main()
{
char str[100];
puts("What's your name?");
gets(str);
printf("Hello %s!n", str);
}
answered Nov 22 at 16:26
Govind Parmar
6,92553053
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
Newer standards are not guaranteed to be compatible, even though the committee has a (far too) strong focus on backwards compatibility.
- C90 is not completely compatible with newer versions.
- C11 and C17 are compatible with C99, apart from some corrections.
Official recommendations of functions to avoid are found in:
- C17 6.11 Future language directions, and
- C17 6.32 Future library directions
Notably, the official recommendations are free from misguided Microsoft propaganda regarding the string handling functions etc.
Unofficial recommendations by yours sincerely here:
Which functions from the standard library must (should) be avoided?.
answered Nov 22 at 16:37
Lundin
105k17154259
add a comment |
up vote
2
down vote
accepted
Newer standards are not guaranteed to be compatible, even though the committee has a (far too) strong focus on backwards compatibility.
- C90 is not completely compatible with newer versions.
- C11 and C17 are compatible with C99, apart from some corrections.
Official recommendations of functions to avoid are found in:
- C17 6.11 Future language directions, and
- C17 6.32 Future library directions
Notably, the official recommendations are free from misguided Microsoft propaganda regarding the string handling functions etc.
Unofficial recommendations by yours sincerely here:
Which functions from the standard library must (should) be avoided?.
answered Nov 22 at 16:37
Lundin
105k17154259
add a comment |
up vote
2
down vote
accepted
up vote
2
down vote
accepted
Newer standards are not guaranteed to be compatible, even though the committee has a (far too) strong focus on backwards compatibility.
- C90 is not completely compatible with newer versions.
- C11 and C17 are compatible with C99, apart from some corrections.
Official recommendations of functions to avoid are found in:
- C17 6.11 Future language directions, and
- C17 6.32 Future library directions
Notably, the official recommendations are free from misguided Microsoft propaganda regarding the string handling functions etc.
Unofficial recommendations by yours sincerely here:
Which functions from the standard library must (should) be avoided?.
answered Nov 22 at 16:37
Lundin
105k17154259
Newer standards are not guaranteed to be compatible, even though the committee has a (far too) strong focus on backwards compatibility.
- C90 is not completely compatible with newer versions.
- C11 and C17 are compatible with C99, apart from some corrections.
Official recommendations of functions to avoid are found in:
- C17 6.11 Future language directions, and
- C17 6.32 Future library directions
Notably, the official recommendations are free from misguided Microsoft propaganda regarding the string handling functions etc.
Unofficial recommendations by yours sincerely here:
Which functions from the standard library must (should) be avoided?.
answered Nov 22 at 16:37
Lundin
105k17154259
answered Nov 22 at 16:37
Lundin
105k17154259
answered Nov 22 at 16:37
Lundin
105k17154259
answered Nov 22 at 16:37
Lundin
105k17154259
105k17154259
add a comment |
add a comment |
up vote
1
down vote
The following code is valid in C89, deprecated under C99, and invalid in C11 and further, due to its use of the unsafe function gets:
#include <stdio.h>
int main()
{
char str[100];
puts("What's your name?");
gets(str);
printf("Hello %s!n", str);
}
answered Nov 22 at 16:26
Govind Parmar
6,92553053
add a comment |
up vote
1
down vote
The following code is valid in C89, deprecated under C99, and invalid in C11 and further, due to its use of the unsafe function gets:
#include <stdio.h>
int main()
{
char str[100];
puts("What's your name?");
gets(str);
printf("Hello %s!n", str);
}
answered Nov 22 at 16:26
Govind Parmar
6,92553053
add a comment |
up vote
1
down vote
up vote
1
down vote
The following code is valid in C89, deprecated under C99, and invalid in C11 and further, due to its use of the unsafe function gets:
#include <stdio.h>
int main()
{
char str[100];
puts("What's your name?");
gets(str);
printf("Hello %s!n", str);
}
answered Nov 22 at 16:26
Govind Parmar
6,92553053
The following code is valid in C89, deprecated under C99, and invalid in C11 and further, due to its use of the unsafe function gets:
#include <stdio.h>
int main()
{
char str[100];
puts("What's your name?");
gets(str);
printf("Hello %s!n", str);
}
answered Nov 22 at 16:26
Govind Parmar
6,92553053
answered Nov 22 at 16:26
Govind Parmar
6,92553053
answered Nov 22 at 16:26
Govind Parmar
6,92553053
answered Nov 22 at 16:26
Govind Parmar
6,92553053
6,92553053
add a comment |
add a comment |
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Yes; the
getsfunction is the biggest example– Govind Parmar
Nov 22 at 16:17
1
...which is mentioned in the Wikipedia article for C11.
– Robert Harvey♦
Nov 22 at 16:18
1
getsis not only depracated in C11, but in fact completely removed. The changes can be found in the appendixes of each standard document.– DeiDei
Nov 22 at 16:26
2
Possible duplicate of Compatibility of C89/C90, C99 and C11
– Swordfish
Nov 22 at 16:26