Iso C++ Forbids Variable Length Array

Iso C++ Forbids Variable Length Array

Need rows of variable length for ISOC ++? ^

Or whatever problem I have with C ++ code 11. Works in code block but does not set in my scale compiler, can you fix it to work?

The compiler says:

Error: Ford ISO C ++ array with variable length 'aÃ' [error = vla]

Numerical a [c], b [c]

^

Error: Ford ISO C ++ array variable length with 'bÃ' [error = vla]

Numerical a [c], b [c]

^

Code:

#Key

#Key

With STD name

Int Man ();

INT, J, L

Parents

Yes, this is not possible in standard C ++. This is a C feature (by 1999 standard) that was never adopted by C ++.

In C ++, you should use vectors instead of int intra [] arrays for the entire list of different lengths. Add # above and replace your int [a] [c], b [c] statements with:

Pattern :: vector a (c), b (c)

Everything else in your code is the same. It works fine in Ming WG ++ and prints the first 4 lines of Pascal's triangle as n = 4.

You can also use the new and delete [] to create and delete dynamic rows. This is only necessary in exceptional cases, especially in cases where the default deposit types do not suit your needs and the modern use of C ++ is to combine such a CL container with a distractor. Use that which ensures storage through memory. Remove [] released to turn on regardless of the output of its function. You do not need this in this program.

If this is an introductory key where (for some reason) you are not allowed to use row types, just replace the B statements.

Numerical a [1000], b [1000]

... and it allows you to run sizes up to n == 1000, but will fail (unexpectedly) on larger sizes. In this case, an error message may appear if the value of the corrupted n is too large.

One last option, since you seem to be using the GNU g ++ configuration, is to change the compilation options to enable GNU extensions. This allows you to use the variable length C99 array in C ++ programs. Replace std = c ++ 11 with std = gnu ++ 11 and recreate it. If you turn on alerts, the error becomes a warning. You can disable this custom warning via ovla.

Iso C++ Forbids Variable Length Array

Iso C++ Forbids Variable Length Array

Does ISOC ++ need rows of variable length? ۔

Or whatever problem I have with C ++ code 11.

This is what compiles:

Error: Ford ISO C ++ array with variable length 'aÃ' [error = vla]

Number a [c], b [c]

۔

Error: ford ISO C ++ array with variable length 'bÃ' [Error = vla]

Number a [c], b [c]

۔

Code:

#to understand

#to understand

With STD name.

int main ()

Int I, J, L.

Parents

Yes, this is not possible in standard C ++. This is a C feature (by 1999 standard) that C ++ has never adopted.

In C ++, you should use vectors instead of int [] arrays for lists of numbers of different lengths. Add # above and change your int a [c], b [c] statements:

Pattern :: vector a (c), b (c)

Everything else in your code is the same. It works fine in MinGW g ++ and prints the first 4 lines of Pascal's triangle with n = 4.

You can also use the new and delete [] to create and delete dynamic rows. This is only necessary in rare cases, especially in cases where the default collection types do not suit your needs and the modern use of C ++ is to use a cl container with a destroyer which ensures Is to save memory through a. Released to turn on. [] Regardless of function output. You do not need it in this program.

If this is an introductory key where (for some reason) you are not allowed to use the row types, just change the a, b statements to:

Number one [1000], b [1000]

... and it allows you to run sizes up to n == 1000, but will fail (unexpectedly) in larger sizes. In this case, an error message may appear if the value of n entered is too large.

One last option, since you are using the GNU g ++ compiler, is to change the compilation options to enable GNU extensions. It allows you to use variable length C99 rows in C ++ programs. Replace std = c ++ 11 with std = gnu ++ 11 and recreate it. If you turn on alerts, the error becomes a warning. You can disable custom alerts from Ovala.

Iso C++ Forbids Variable Length Array