SEI CERT C Coding Standard

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changes.mady.by.user Robert Seacord

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Code Block
bgColor#FFcccc
int a = 2;
int b = 2;
int c = 2;
//* ... */
if (a < b < c) /* misleading, likely bug */
//* ... */
if (a == b == c) /* misleading, likely bug */

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Code Block
bgColor#ccccff
if ( (a < b) && (b < c) ) /* clearer, and probably what was intended */
//* ... */
if ( (a == b) && (a == c) ) /* ditto */

Automated Detection

The gcc GCC option -Wparentheses warns if a comparison like `x<x<=y<=z' appears. This warning is also enabled by -Wall.

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