Answer / rusmguys

# is preprocessor which tell compiler that what header
file we using in our program.
for example:
#include<stdio.h>
void main()
in the above when compiler check program it start execution
of program from main and will tell that uor header file
is "standard input output header file"

Answer / saurabh chakrabarty

# is used in c to write preprocessor statements (i.e. macros)

these statements are called preprocessor statements as these
statements are processed prior to the compilation of the
rest of the code by the compiler

Answer / sujith

Another use is for token pasting if used as ##

Write a C program linear.c that creates a sequence of processes with a given length. By sequence it is meant that each created process has exactly one child. Let's look at some example outputs for the program. Here the entire process sequence consists of process 18181: Sara@dell:~/OSSS$ ./linear 1 Creating process sequence of length 1. 18181 begins the sequence. An example for a sequence of length three: Sara@dell:~/OSSS$ ./linear 3 Creating process sequence of length 3. 18233 begins the sequence. 18234 is child of 18233 18235 is child of 18234 ........ this is coad .... BUt i could not compleate it .....:( #include <stdio.h> #include <sys/types.h> #include <unistd.h> #include <stdlib.h> int main(int argc, char *argv[]) { int N; pid_t pid; int cont; if (argc != 2) { printf("Wrong number of command-line parameters!\n"); return 1; } N = atoi(argv[1]); printf("Creating process sequence of length %d.\n",N); printf("%d begins the sequence.\n",getpid()); /* What I have to do next ?????? */ }

0 Answers  

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what's the o/p int main(int n, char *argv[]) { char *s= *++argv; puts(s); exit(0); }

1 Answers   Motorola,

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Is it cc or c in a letter?

0 Answers  

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What is the benefit of using const for declaring constants?

0 Answers  

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what is diff between localstatic and globalstatis variable possible 2 use in another file...?

2 Answers   HCL,

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what is the output for the code : main() { int i,j; printf("%d %d ",scanf("%d%d",&i,&j)); }

20 Answers   Infosys,

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#include<stdio.h> int fun(); int i; int main() { while(i) { fun(); main(); } printf("hello \n"); return 0; } int fun() { printf("hi"); } answer is hello.how??wat is tat while(i) mean?

7 Answers   Intel,

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What is C++

4 Answers  

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What are the different data types in C?

0 Answers  

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please send me papers for Dy. manager IT , PNB. it would be a great help for me.

0 Answers  

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difference between malloc and calloc

3 Answers   HCL, Wipro,

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can we print any string in c language without using semicolon(;)(terminator) in whole program.

11 Answers  

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