Standard for “not found” when using size_t
Is there a standard what value to use when you do an array search and the value is not found.
With signed I would return -1. But what about size_t aka long unsigned.
int find(int a,int b, int n){
for(int i=0; i<n; i++){
if(a[i]==b)
return i;
}
return -1;
}
When using size_t just would come up with this. But it's not really perfect.
long long int find(int a,int b, size_t n){
for(size_t i=0; i<n; i++){
if(a[i]==b)
return (long long int)i;
}
return -1;
}
clang size-t
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
add a comment |
Is there a standard what value to use when you do an array search and the value is not found.
With signed I would return -1. But what about size_t aka long unsigned.
int find(int a,int b, int n){
for(int i=0; i<n; i++){
if(a[i]==b)
return i;
}
return -1;
}
When using size_t just would come up with this. But it's not really perfect.
long long int find(int a,int b, size_t n){
for(size_t i=0; i<n; i++){
if(a[i]==b)
return (long long int)i;
}
return -1;
}
clang size-t
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
add a comment |
Is there a standard what value to use when you do an array search and the value is not found.
With signed I would return -1. But what about size_t aka long unsigned.
int find(int a,int b, int n){
for(int i=0; i<n; i++){
if(a[i]==b)
return i;
}
return -1;
}
When using size_t just would come up with this. But it's not really perfect.
long long int find(int a,int b, size_t n){
for(size_t i=0; i<n; i++){
if(a[i]==b)
return (long long int)i;
}
return -1;
}
clang size-t
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
Is there a standard what value to use when you do an array search and the value is not found.
With signed I would return -1. But what about size_t aka long unsigned.
int find(int a,int b, int n){
for(int i=0; i<n; i++){
if(a[i]==b)
return i;
}
return -1;
}
When using size_t just would come up with this. But it's not really perfect.
long long int find(int a,int b, size_t n){
for(size_t i=0; i<n; i++){
if(a[i]==b)
return (long long int)i;
}
return -1;
}
clang size-t
clang size-t
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
asked Nov 22 '18 at 2:45
Felix Yah Batta ManFelix Yah Batta Man
12729
12729
add a comment |
add a comment |
1 Answer
1
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oldest
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To allow a size_t type to have a negative value, there is a ssize_t type which is signed.
You can't rely on the equivalence of the size_t to unsigned long as its architecture specific.
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
add a comment |
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1 Answer
1
active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
To allow a size_t type to have a negative value, there is a ssize_t type which is signed.
You can't rely on the equivalence of the size_t to unsigned long as its architecture specific.
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
add a comment |
To allow a size_t type to have a negative value, there is a ssize_t type which is signed.
You can't rely on the equivalence of the size_t to unsigned long as its architecture specific.
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
add a comment |
To allow a size_t type to have a negative value, there is a ssize_t type which is signed.
You can't rely on the equivalence of the size_t to unsigned long as its architecture specific.
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
To allow a size_t type to have a negative value, there is a ssize_t type which is signed.
You can't rely on the equivalence of the size_t to unsigned long as its architecture specific.
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
answered Nov 22 '18 at 2:50
danblackdanblack
1,5671214
1,5671214
add a comment |
add a comment |
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