2024 Right-hand operand of comma has no effect

Right-hand operand of comma has no effect

Author: xuef

August undefined, 2024

WebThis is because the comma operator evaluates the left hand side, discards the result, then evaluates the right hand side. Thus "2,5" is the same as "5", and "5,2" is the same as "2". Incidentally, my compiler warns me about the code you've written: g++ -Wall test.cpp -o test test.cpp: In function 'int main ()': WebJun 5, 2024 · Solution 2 The comma operator evaluates any number of expressions from left to right, and results in the value of the right-most one. You have a comma in Table [i, temp3], which is exactly as doing Table [temp3]. Were you trying to do Table [i] [temp3] to access a position in a bidimensional array?

right-hand operand of comma expression has no effect …

WebOperator precedence determines how operators are parsed concerning each other. Operators with higher precedence become the operands of operators with lower precedence. WebOct 31, 2014 · Seems like you're using a particularly anal version of GCC. The problem occurs in compiling a file in the mainline GAS source, not the RISC-V port, shenandoah county department of social

[Solved] left-hand operand of comma expression has no effect

WebThe right-hand operand of a shift operator should not be too big or negative. The right-hand operand of a shift operator shall lie between zero and one less than the width in bits of the underlying type of the left-hand operand . Required. M12.9: Rule 12.9: Only use unary minus operators with signed expressions. WebMar 11, 2024 · Error: right-hand operand of comma expression has no effect · Issue #11 · rxi/vec · GitHub. rxi / vec Public archive. Notifications. WebFeb 14, 2010 · ./CImg.h:30417: warning: left-hand operand of comma has no effect ./CImg.h:30417: warning: right-hand operand of comma has no effect ./CImg.h:30417: warning: right ... spotify premium discount for seniors

Operator precedence - JavaScript MDN - Mozilla Developer

For Loop in C - Know Program

The compiler is warning you that the first two have no effect. The comma operator stitches together multiple expressions, evaluating them in order. The comma-separated expression in the right set of parentheses evaluates to the value of the final expression in the chain of commas (name in this case). WebFeb 9, 2015 · Comma is a valid C operator so TRUE is just the right hand size of that operator. This code just guarantees that no matter what the value of bool is, the value of … shenandoah county eccWebFeb 14, 2010 · Website. hello, i am getting an error updating this package after libpng update... any clues? ./CImg.h:30417: warning: left-hand operand of comma has no effect … shenandoah county dog pound

"WebFeb 9, 2015 · ./bfd.h:529:65: error: right-hand operand of comma expression has no effect [-Werror=unused-value] #define bfd_set_cacheable (abfd,bool) ( ( (abfd)->cacheable = bool), TRUE) ^ /home/odroid/buildgcc/propgcc/binutils/bfd/opncls.c:257:5: note: in expansion of macro bfd_set_cacheable bfd_set_cacheable (nbfd, TRUE); ^ " - Right-hand operand of comma has no effect

Right-hand operand of comma has no effect

WebMay 6, 2014 · Warning about the right-hand expression having no effect is incorrect because it supplies the return value of the expression (unlike the left-hand side). I suggest that this … Webright operand with the left operand and assign the result to c=c*a left operand /= Divide AND assignment operator, It ... Comma operator causes a sequence of operations to ... All the variables on to the right hand side of the expression should be assigned values before evaluation. If in an expression any two operators have same ...

Did you know?

Web[Patch bfd] Remove unneeded comma expression from bfd_set_section_userdata, bfd_set_section_alignment, bfd_set_section_vma. From: Ramana Radhakrishnan ; To: "binutils at sourceware dot org" ; Date: Mon, 27 Jan 2014 11:30:38 +0000; Subject: [Patch bfd] Remove unneeded comma … WebI.e., starting from the same value 42 for both x and y, only x has reached the value zero after decrease_until_one_is_null returns. The reason is that the side effect on y is performed only conditionally. To avoid such surprises, MISRA C Rule 13.5 states: "The right hand operand of a logical && or operator shall not contain persistent side effects"; this rule forbids the …

WebJul 22, 2024 · => left-hand operand of comma expression has no effect. I find the above code is correct and could not understand why this error comes. This is how the comma operator works, what you want to do is to use OR or AND (probably AND in your case): You have three comma operators in each of the three terms of the for statement. The warning … WebDec 12, 2024 · Solution 2 You have three comma operators in each of the three terms of the for statement. The warning is for term 2. Both expressions of terms 1 and 3 are executed …

WebJul 10, 2024 · ./bfd.h:529:65: error: right-hand operand of comma expression has no effect [-Werror=unused-value] #define bfd_set_cacheable(abfd,bool) (((abfd)->cacheable = …

Web[Solved]-error in compile c++ code right operand of comma operator has no effect-C++ score:5 Accepted answer You're using comma operator, and according to the operator …

WebJun 28, 2014 · Subject: sdcc: FTBFS - right-hand operand of comma expression has no effect [-Werror=unused-value] Date: Sat, ... error: right-hand operand of comma expression has no effect [-Werror=unused-value] #define bfd_set_cacheable(abfd,bool) (((abfd)->cacheable = bool), TRUE) ^ opncls.c:261:5: note: in expansion of macro … shenandoah county courthouse woodstock vaWebThe sizeof operator should not be used on expressions that contain side effects. No warning on volatile accesses. 12.4: The right hand operand of a logical && or operator shall not contain side effects. The right hand operand of a logical && … shenandoah county extension officeWebFeb 11, 2013 · DescriptionThomas2013-02-11 17:59:59 UTC Compile the following with -Wunused-value: int main () { int x = 0; int y = 0; (void) x, y; /* warning: right operand of comma operator has no effect [-Wunused-value] */ return 0; } This is a bad warning, as casting to void should eliminate the warning for both x and y. spotify premium credit card offersWebYou have three comma operators in each of the three terms of the for statement. The warning is for term 2. Both expressions of terms 1 and 3 are executed as expected. The left operation of the term 2 is evaluated only as a void, doesn't take part in the for condition, and therefore leads to your warning. acraig5075 10338 Source: stackoverflow.com spotify premium family and huluWebRight hand operand of shift operation should be performed on unsigned value: Required: M10.1.8: ... The comma operator should not be used: ... or decrement (--) operator should have no other potential side effects other than that caused by the increment or decrement operator: Advisory: shenandoah county courthouse recordsWebYou have three comma operators in each of the three terms of the for statement. The warning is for term 2. Both expressions of terms 1 and 3 are executed as expected. The … shenandoah county dss woodstock vaWebJul 10, 2024 · right-hand operand of comma expression has no effect #286. kayegee opened this issue Jul 10, 2024 · 1 comment Comments. Copy link kayegee commented Jul 10, 2024. ... ./bfd.h:529:65: error: right-hand operand of comma expression has no effect [-Werror=unused-value] spotify premium download music offline