Answer / ravi joshi

The following code snippet explain the use of #define and
#undef preprorcessor directives.

/* define our own value of NULL */
#ifdef NULL
#undef NULL /* if NULL is already defined, then
undefine it */
#define NULL ((void*)0) /* define our own version of NULL
#endif

What are types of structure?

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3 Answers   Google,

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State the difference between x3 and x[3].

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how is the examination pattern?

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Differentiate between ordinary variable and pointer in c.

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What is abstract data structure in c?

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What will be result of the following program? void myalloc(char *x, int n) { x= (char *)malloc(n*sizeof(char)); memset(x,\0,n*sizeof(char)); } main() { char *g="String"; myalloc(g,20); strcpy(g,"Oldstring"); printf("The string is %s",g); } a) The string is : String b) Run time error/Core dump c) The string is : Oldstring d) Syntax error during compilation e) None of these

3 Answers   IBM,

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void main() { int i=5; printf("%d",i++ + ++i); }

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