Answer Posted / guest

#include <stdio.h>

int main(int argc, char** argv)
{
/* This macro B will expand to its argument, followed by a
printf
command that prints the macro invocation as a literal
string */
#define B(x) x; printf(" B(" #x ")\n");

/* This macro A will expand to a printf command that prints
the
macro invocation, followed by the macro argument itself. */
#define A(x) printf(" A(" #x ")\n"); x;

/* Now we call B on a command to print the text of the
program
up to this point. It will execute the command, and then
cause
itself to be printed. */
B(printf("#include <stdio.h>\n\nint main(int argc, char**
argv)\n{\n/*
This macro B will expand to its argument, followed by a
printf\n
command that prints the macro invocation as a literal
string
*/\n#define B(x) x; printf(\" B(\" #x \")\\n\");\n\n/*
This macro
A will expand to a printf command that prints the\n
macro invocation, followed by the macro argument itself.
*/\n#define A(x)
printf(\" A(\" #x \")\\n\"); x;\n\n/* Now we call B on
a command
to print the text of the program\n up to this point. It
will execute
the command, and then cause\n itself to be printed.
*/\n"))
A(printf("/* Lastly, we call A on a command to print the
remainder
of the program;\n it will cause itself to be printed,
and then
execute the command. */\n}\n"))
/* Lastly, we call A on a command to print the remainder of
the program;
it will cause itself to be printed, and then execute the
command. */
}

hello freinds next week my interview in reliance,nybody has an idea about it intervew questions..so tell

1955

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What are different types of operators?

783

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How can I invoke another program or command and trap its output?

866

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What is the use of a static variable in c?

797

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How can you find the exact size of a data type in c?

786

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How do you generate random numbers in C?

920

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What is a 'null pointer assignment' error?

949

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What are header files and explain what are its uses in c programming?

849

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Can we initialize extern variable in c?

875

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Why do we use main function?

909

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If a five digit number is input through the keyboard, write a program to print a new number by adding one to each of its digits.For example if the number that is input is 12391 then the output should be displayed as 23402

3580

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What is the 'named constructor idiom'?

830

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What is #define in c?

827

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How can I copy just a portion of a string?

1071

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int i=3; this declaration tells the C compiler to a) reserve space in memory to hold the integer value b) associate the name i with this memory location c) store the value 3 at this location d) all the above

1000

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