Difference between revisions of "C programming/Typecast"

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// 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 long
 
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 long
 
</source>
 
</source>
 
[[Category:C]]
 
[[Category:C]]

Latest revision as of 15:56, 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 long