this is the program: i am attching screenshot of the error
#include<iostream>
int main() {
int x[]= {23,4,66,83,45,65,78,8900};
for(int i =0;i < std::size(x); i++){
std::cout<<"Number "<<i<<" "<<x[i]<<std::endl;
}
}
a solution for this error
Asked
Active
Viewed 75 times
0
-
`sizeof(x) / sizeof(x[0])` – lorro Dec 23 '22 at 00:26
-
1It means your compiler is either too old or you need to specify the standard c++17 or newer. – drescherjm Dec 23 '22 at 00:27
-
6std::size is a C++17 feature (try to enable it with -std=c++17). – Robert Prévost Dec 23 '22 at 00:28
-
gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1) this is my gcc version – Teddy Dec 23 '22 at 00:54
-
I believe gcc-9.4 won't default to `-std=c++17` you will have to add it to your compiler flags. – drescherjm Dec 23 '22 at 01:41
1 Answers
0
std::size is defined in a number of headers, but iostream is not one of them.
Defined in header <array>
Defined in header <deque>
Defined in header <forward_list>
Defined in header <iterator>
Defined in header <list>
Defined in header <map>
Defined in header <regex>
Defined in header <set>
Defined in header <span> (since C++20)
Defined in header <string>
Defined in header <string_view>
Defined in header <unordered_map>
Defined in header <unordered_set>
Defined in header <vector>
Clifford
- 88,407
- 13
- 85
- 165