C Obscurity Tests (with reasons behind them)
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Why char *p=? ponnada? ? ; *p=M dont work? ?
Char *p= “ponnada” ; char *r= “rajulu” ;
*p=M? ; *r=M? ;
p doesnt work where as r works because eventhough p is not a constant variable
the string ? ponnada? stored in .rodata (readonl? y) section, so while modifing
u get an error. R will be stored in stack, so no problems.
But p works on turbo C on windows mechines, so it is not safe to use that way if we need portability, depending
on compiler we may get error.
?
Obscurity Test? :
? ? ? if (? !strcmp(? ponnada? , ? ponnada\0? )) printf(? ..\n? )? ; it prints the dots, coz there is no diff between ? ponnada? and ? ponnada\0? .
? ? ? calloc(2) works? ?? ans? : works but behaviour compiler dependent. Reason? : in C u can pass any number of args, any type of args in a function . if u dont declare a proto u wont even get a warning. Thats why calloc(2) works, calloc takes 2 params (number of items, sizeof item), so here 2 is passed as number of items, size of item will be some junk value, an it tries to allocate
? ? ? int j*=10 works? ?? compilation error
[tags]c obscurity tests[/tags]
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Related Blog Items - Interrupt latency and its causes
- How Bus Error occurs
- Optimizing C and C++ Code
- C++ Advanced Tutorial - Lesson 7
- C++ Advanced Tutorial - Lesson 4
Related Blog Items
- Interrupt latency and its causes
- How Bus Error occurs
- Optimizing C and C++ Code
- C++ Advanced Tutorial - Lesson 7
- C++ Advanced Tutorial - Lesson 4
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