Difference between revisions of "C programming/Typecast"
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(Created page with "Avoid typecasting when possible. If necessary make it clear. <source lang=c> unsigned long responsetime; // 64 bit type unsigned int overflows; // 32 bit type unsig...") |
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// Next line (long) cast necessary as overflows are only int (Bad programming - avoid casts) | // Next line (long) cast necessary as overflows are only int (Bad programming - avoid casts) | ||
// DO NOT: responsetime=((long) overflows * 0x10000)+e.tarvalue; // Works but Hard to read | // DO NOT: responsetime=((long) overflows * 0x10000)+e.tarvalue; // Works but Hard to read | ||
| − | responsetime=overflows; // Going from smaller to bigger type is OK. int to | + | responsetime=overflows; // Going from smaller to bigger type is OK. int to long |
responsetime=(responsetime*0x10000)+e.tarvalue; //short to longl | responsetime=(responsetime*0x10000)+e.tarvalue; //short to longl | ||
</source> | </source> | ||
[[Category:C]] | [[Category:C]] | ||
Revision as of 16:56, 18 May 2023
Avoid typecasting when possible. If necessary make it clear.
unsigned long responsetime; // 64 bit type
unsigned int overflows; // 32 bit type
unsigned short tarvalue; // 16 bit type
// Next line (long) cast necessary as overflows are only int (Bad programming - avoid casts)
// DO NOT: responsetime=((long) overflows * 0x10000)+e.tarvalue; // Works but Hard to read
responsetime=overflows; // Going from smaller to bigger type is OK. int to long
responsetime=(responsetime*0x10000)+e.tarvalue; //short to longl