Why is not a pointer null after calling free? How unsafe is it to use (assign, compare) a pointer value after it is been freed?
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How can my program discover the complete pathname to the executable from which it was invoked?
1.what are local and global variables? 2.what is the scope of static variables? 3.what is the difference between static and global variables? 4.what are volatile variables? 5.what is the use of 'auto' keyword? 6.how do we make a global variable accessible across files? Explain the extern keyword? 7.what is a function prototype? 8.what does keyword 'extern' mean in a function declaration?
a parameter passed between a calling program and a called program a) variable b) constant c) argument d) all of the above
What is a structure in c language. how to initialise a structure in c?
Whether there can be main inside another main?If so how does it work?
print pattern 1 1 33 33 555 555 77777777 555 555 33 33 1 1
What is the meaning of int *x[]();?
A character flag or control mechanism that delineates one data item from another a) variable b) constant c) delimiter d) call by reference
Compare and contrast compilers from interpreters.
what is diff b/w huge & far & near pointer??
write a program to display all prime numbers
array of pointer pointer to array pointer to pointer