Answer / johnson

Sorry, that is not strictly correct. According to the man page:

"The alloca() function allocates size bytes of space in the
stack frame of the caller, and returns a pointer to the
allocated block. This temporary space is automatically freed
when the caller returns."

Now this is the real reason:
" If the allocated block is beyond the current stack limit,
the resulting behavior is undefined."

Answer / sathish kumar

Hi All,

If you use alloca inside a function when it retuns from
function it will be resulting in memory leak. Thats why
its discouraged to use.

Thanks & Regards
Sathish Kumar

program to print upper & lower triangle of a matrix

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Draw a flowchart to produce a printed list of all the students over the age of 20 in a class .The input records contains the name and age of students. Assume a sentinel value of 99 for the age field of the trailer record

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#include<stdio.h> int f(int,int); int main() { printf("%d",f(20,1)); return 0; } int f(int n,int k) { if(n==0) return 0; else if(n%2)return f(n/2,2*k)+k; else return f(n/2,2*k)-k; } how this program is working and generating output as 9....?

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