[previous] 3501 [next] Absence of space between assignment operator and following unary operator may cause confusion.
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An assignment operator (=) is followed by a unary operator without an intervening space.

In old (pre-ISO) versions of the C language, compound assignment operators were written differently. For example, the compound addition operator was "=+" instead of "+=".

These old forms are no longer valid syntax in ISO:C; but it can be misleading if a simple assignment operator (=) is followed by a unary operator such as (*, +, - or &) with no intervening space. Addition of a space has no semantic significance but may eliminate confusion. Message 3501 is generated to identify such situations.

For example: 


/*PRQA S 506,2211,3120,3198,3199,3203,3227,3408,3440,3447,3600,3673 ++*/

extern void foo(int sia)
{
   int si;
   int *pi;

   si=-10;                     /* Message 3501 */
   si=+10;                     /* Message 3501 */
   pi=&sia;                    /* Message 3501 */
   si=*pi;                     /* Message 3501 */

   si=- 10;                    /* Message 3501 */
   si=+ 10;                    /* Message 3501 */
   pi=& sia;                   /* Message 3501 */
   si=* pi;                    /* Message 3501 */

   si= -10;                    /*              */
   si= +10;                    /*              */
   pi= &sia;                   /*              */
   si= *pi;                    /*              */
}

QA·C Source Code Analyser 8.1.2
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