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C riddles and
questions on Printf Function
Printf Function
and Questions.
int Printf(const char * string ,...);
The printf function returns the number of characters printed
or a negative value if an error occurs
1.printf("%d",printf("exams"));
now the output will be exams5.
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2.char
*ptr=(char *)1000;
printf(ptr);
Here simply an address value is passed so, some garbage value in
that address will be printed
3.printf("%%%%")
simple question. %% will be printed.
4.int i=1;
printf("%d",++i,i++,++i);
4 will be printed. first all the increment operations will be
performed right to left).then the format specifiers and the
arguments are matched in order
from left to right. so 4 is the answer.
i=1;
printf("%d%d",i++,++i,i++);
now 3,3 will be printed.since we have i++ first.
i=1;
printf("%d%d%d",++i,i++,i++);
4,2,1 will be the answer. |
5. printf("exams"+2);
"ams" will be printed.
when we pass a string to any function only the base address of will
be passed. Here the base address plus two gets passed. So the printf
function starts printing from the third character.
.int
a1[]={4,5};
printf("%d%d",0[a],a[0]);
same value will be printed twice.
7.printf("%C","boring"[4]);
'n' will be printed.
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