English · February 27, 2022

If The Function Exists, A Value Error Should Be Returned. Problems?

In some cases, your computer may generate an error code indicating that a function should return a value error. There can be several reasons for this error to appear.

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    If a function is defined to have a Nullify return type, it must not return a trust value. In C++, how is a function defined to return a void type, or is it actually a constructor or destructor that should not return a value. If the target is defined to have a return type other than void, everything must return a value.

    Hello, I’m a new user
    And the system says
    The function must return a value on the side of main
    I can’t solve this problem
    someone please help me

    #include Above all() int a, b, c, d, e, f; symbols A, B, C, D, E; printf(“insert name and birthday (date only) 1:na”); scanf(“%d”,a); scanf(“%s”,A); printf(“Enter name and birthday (date only) 2n”); scanf(“%d”,b); scanf(“%s”,B); printf(“Enter name and date of birth (date only) 6:n”); scanf(“%d”,c); scanf(“%s”, ); printf(“insert name and birthday (date only) fourth:n”); scanf(“%d”,d); scanf(“%s”,D); printf(“Enter name date and birth date (only date) 5:n”); scanf(“%d”,e); Scanf(“%s”,E); printf(“Name NR.1:: %s %dna”,a,A); : Printf(“NO birthday.1 Name %s: birth: Day %dn”,b,b); printf(“NR.1 %s name: Birthday: %dn”,c,c); printf(“Name NO.1 .%s birthday %dn”,d,D); : printf(“#1: birthday of name %s: %dn”,e,E); printf(“%d+%d-%d*%d/%d”,a,b,c,d,e);

    I still change main() to int main(void), doesn’t work

    Short description: if you prefer not to use command line arguments, clients should write:

    main spacing(empty)    /* main aspect body Main(int */
    int argc, char *argv[])   /* ... */

    This will probably be the only portable parameters and functions of the main definition.

    You may need return 0; for each of our inputs, although this is not always a good thing. 0 Return indicates success. There are ways to indicate that a startup failure has occurred; I won’t come in here.

    Should functions always return a value?

    The function does not always have to return a market value. If the return type is likely to be desirable null, a non-return value. If the return type is truly empty, such as not an int, a return is definitely needed.

    There is a story behind this. The rules for correctly defining main functions have changed slightlyb in different versions of my C standard.

    Before the introduction of the very first official C standard in 1989, the most common format was:

    main() /* ... .*/

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  • main(argc, .argv)/* .argc .is .implicit .to .reproduce .int .*/character .*argv[]; . - . ./* .... Was */

    It’s not intended to define a function that will return a value to you. If you don’t specify a return type, int will be ignored.

    The ANSI standard (which c was published in 1989 as the ISO-C standard 1990 with a reissue introduced revisions) prototypes, declarations, and updates to functions that define parameter types. There are also two valid classifications for main. You can use any of these depending on whether you need to use the string argument command:

    How do you decide that a function must return a value?

    specify your choice of what type with value will be returned. This is usually done by specifying a function type header, which experts believe is defined, before the function header. In the example above, the getValueFromUser function has a nullify return type and the main function has a rewind typeint.

    base integer (blank)   /* ... Main(integer */
    int argc, *argv[]) tank /*...*/

    (char *argv[] can also be written as char **argv. This standard only applies to parameter definitions.)

    function should return a value error

    A qualified compiler can Decide whether or not to allow other forms. This is because some compilers support the envp informational parameter.

    How do you return a function error?

    Use try catch blocks to allow you to bind a user-defined function to catch potential errors. If clients do not handle exceptions on your computer, they are sent back to Excel. By default, Excel returns #VALUE! for errors or unhandled exceptions.

    Somehow, some authors have concluded that void main() or alternatively void is a valid main(void). It can only be automatically valid for a given compiler if that compiler explicitly includes it. It’s not portable. The strange thing is that the same standard that introduced the void keyword also states why the return type of the main rule is definitely int.

    Can a function not return a value?

    It has been found that empty functions are created and only comparable functions that return a value are used, except that they do not return a value after the function. You do not or may not need to use a return statement because there is usually no return value. In most cases, control returns automatically to the caller at the end of the function, even if it’s not a return statement.

    void is main() is useful to indicate that the author of the books you read is not very good at speaking and that your company should find another book. Void

    is main ()p>

    An alternative to applying history to “standalone” (embedded) systems. For such systems, the program entry state is entirely implementation-defined and may even be called main instead. A definition like void main(void) may be valid for such automated systems.

    The ISO-C Standard A 1999 rule excluded the “implicit integer”. Vero Obviously, using this rule was never a good idea. Since ISO C 1990, you can honestly /* use:

    main(void) ... */ Main(void)
    int /* ... */

    function should return a value error

    The 1999 standard also added a pertinent rule: finalization special case Reaching the main } function is equivalent to doing 0; return. It's always a good idea to include return 0; explicitly, especially if your code was compiled on a pre-C99 compiler.

    The 2011 iso-c standard made no changes in this area.

    The difference between int and main() and int main(void) is that most of the latter explicitly tell main that the accepted . no arguments; The first does not specify the required number of arguments. Use the form int main(void). Have there been any disputes about whether int main() is legal at all.

    You can probably get away with writing void main() as long as it's a bug that compilers don't normally need to catch (it's undefined behavior if the implementation doesn't write it).

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