#sequence-points

[goodanswerbiz]

Fixed Why are these constructs (using ++) undefined behavior? #dev #it #asnwer

Fixed Why are these constructs (using ++) undefined behavior? #dev #it #asnwer

Why are these constructs (using ++) undefined behavior?

int main(int argc, char ** argv) { int i = 0; i = i++ + ++i; printf("%d\n", i); // 3 i = 1; i = (i++); printf("%d\n", i); // 2 Should be 1, no ? volatile int u = 0; u = u++ + ++u; printf("%d\n", u); // 1 u = 1; u = (u++); printf("%d\n", u); // 2 Should also be one, no ? register int v = 0; v = v++ + ++v; printf("%d\n", v); // 3 (Should be…

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[goodanswerbiz]

Fixed Undefined Behavior and Sequence Points #dev #it #asnwer

Fixed Undefined Behavior and Sequence Points #dev #it #asnwer

Undefined Behavior and Sequence Points

What are “Sequence Points”? What is the relation between Undefined Behaviour and Sequence Points?

I often use funny and convoluted expressions like a[++i] = i;, to make myself feel better. Why should I stop using them?

If you’ve read this, be sure to visit the follow-up question Undefined Behavior and Sequence Points Reloaded.

(Note: This is meant to be an…

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[sevennet-blog]

How to: Why are these constructs (using ++) undefined behavior?

How to: Why are these constructs (using ++) undefined behavior?

Why are these constructs (using ++) undefined behavior?

int main(int argc, char ** argv) { int i = 0; i = i++ + ++i; printf("%d\n", i); // 3 i = 1; i = (i++); printf("%d\n", i); // 2 Should be 1, no ? volatile int u = 0; u = u++ + ++u; printf("%d\n", u); // 1 u = 1; u = (u++); printf("%d\n", u); // 2 Should also be one, no ? register int v = 0; v = v++ + ++v; printf("%d\n", v); // 3 (Should be…

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[sevennet-blog]

How to: Undefined Behavior and Sequence Points

How to: Undefined Behavior and Sequence Points

Undefined Behavior and Sequence Points

What are “Sequence Points”? What is the relation between Undefined Behaviour and Sequence Points?

I often use funny and convoluted expressions like a[++i] = i;, to make myself feel better. Why should I stop using them?

If you’ve read this, be sure to visit the follow-up question Undefined Behavior and Sequence Points Reloaded.

(Note: This is meant to be an…

View On WordPress