Give a C program named demo.c, that has main() defined as follows: int main(int argc, char...
Give a C program named demo.c, that has main() defined as follows:
int main(int argc, char *argv[])
What is the value of argc for the following command-line:
$ ./demo
a. demo
b. ./demo
c. 1
d. 0
Homework Answers
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Give a C program named demo.c, that has main() defined as
follows:
int main(int argc, char...
In an c program findMax.c, if the main() function is defined as follows. int main (...
In an c program findMax.c, if the main() function is defined as follows. int main ( int argc, char *argv[] ) After compilation, the executable is named as findMax. Answer the following questions if the user runs the executable by typing the following command? > findMax 20 30 40 50 60 test a. Write out the value of argc? b. Write out the array of character strings of argv?
#include <stdio.h> int main(int argc, char *argv[]) { int i; for (i = argc - 1;...
#include <stdio.h> int main(int argc, char *argv[]) { int i; for (i = argc - 1; i > 0; i--) printf("%s ", argv[i]); printf("\n"); return 0; } can you explain this code in c and why use this function
The operating system is Ubuntu 18.04 hello.c #include <stdio.h> int main(int argc, char *argv[]) { printf("Hello...
The operating system is Ubuntu 18.04
hello.c
#include <stdio.h>
int main(int argc, char *argv[]) {
printf("Hello world!\n");
return 0;
}
syscall-hello.c
#include <unistd.h>
#include <sys/syscall.h>
char *buf = "Hello world!\n";
int main(int argc, char *argv) {
size_t result;
/* "man 2 write" to see arguments to write syscall */
result = syscall(SYS_write, 1, buf, 13);
return (int) result;
}Download and compile hello.ce and syscall-hello.com. Compile them statically and dynamically. How do the library and system calls produced by them compare...
The main(int argc, char *argv[]) function will perform the following: • Evaluate whether value in argc...
The main(int argc, char *argv[]) function will perform the following: • Evaluate whether value in argc is greater or equal to 3. • If it is not, then print the following message: Incorrect number of arguments - please call with assignment min max where assignment is the name of your executable and min/max define the range of numbers for your array. • If argc is ≥ 3 convert the values for min and max into integers and store them in...
What is the output of the following code given the program was called using the command-line:...
What is the output of the following code given the program was called using the command-line: a.out input.txt output.txt int main(int argc, char* argv[]) { cout << argc; return 0; } Select one: a. 1 b. 2 c. 3 d. 6 which asnwer it is
#include <stdio.h> int main(int argc, char *argv[]) { char a, *pc, c[9]; int i, *pk, k[9]; a='...
#include <stdio.h> int main(int argc, char *argv[]) { char a, *pc, c[9]; int i, *pk, k[9]; a='z'; pc=&(c[8]); pk=&(k[0]); for (i=0; i<9; i++) { *pc=a-(char)i; pc--; *pk=(int)a-i; pk++; } return 0; }//end of main Answer the below questions with the above code Write out the memory map for the above C code in the following table. For array variables, list the address range for the entire array. Assume the memory address starts from 100, that is, the address for a...
OPERATING SYSTWM Question 31 What is the output of this C program? #include #include void main()...
OPERATING SYSTWM
Question 31 What is the output of this C program? #include #include void main() int mptr, *cptr mptr = (int*)malloc(sizeof(int)); printf("%d", "mptr); cptr = (int)calloc(sizeof(int),1); printf("%d","cptr); garbage 0 000 O garbage segmentation fault Question 8 1 pts If this program "Hello" is run from the command line as "Hello 12 3" what is the output? (char '1'is ascii value 49. char '2' is ascii value 50 char'3' is ascii value 51): #include<stdio.h> int main (int argc, char*argv[]) int...
Command line input In C++ it is possible to accept command line arguments. Command-line arguments are...
Command line input In C++ it is possible to accept command line arguments. Command-line arguments are given after the name of a program in command-line operating systems like Linux and are passed in to the program from the operating system. To use command line arguments in the program, it must first understand the full declaration of the main function, which until now has accepted no arguments. In fact, main can accept two arguments: one argument is number of command line...
#include <stdlib.h> #include <stdio.h> #include "main.h" #define MAX_NUM_LENGTH 11 void usage(int argc, char** argv) { if(argc...
#include <stdlib.h> #include <stdio.h> #include "main.h" #define MAX_NUM_LENGTH 11 void usage(int argc, char** argv) { if(argc < 4) { fprintf(stderr, "usage: %s <input file 1> <input file 2> <output file>\n", argv[0]); exit(EXIT_FAILURE); } } /* This function takes in the two input file names (stored in argv) and determines the number of integers in each file. If the two files both have N integers, return N, otherwise return -1. If one or both of the files do not exist, it...
C programming Question1 (a) Write a C program that will print out all command line arguments,...
C programming Question1 (a) Write a C program that will print out all command line arguments, in reverse order, one per line. Prefix each line with its index. 6 marks] (b) Consider this C code snippet int a- 100 int b- 42; inte p- &a; int q-b; p qi printf ("%d %d\n" ,a,*p); When this code is executed, what numbers will it print? [2 marks] (c) Consider this C program int main(int argc,char argv) char* target- "Apple" char vord[100] printf...
The operating system is Ubuntu 18.04
hello.c
#include <stdio.h>
int main(int argc, char *argv[]) {
printf("Hello world!\n");
return 0;
}
syscall-hello.c
#include <unistd.h>
#include <sys/syscall.h>
char *buf = "Hello world!\n";
int main(int argc, char *argv) {
size_t result;
/* "man 2 write" to see arguments to write syscall */
result = syscall(SYS_write, 1, buf, 13);
return (int) result;
}Download and compile hello.ce and syscall-hello.com. Compile them statically and dynamically. How do the library and system calls produced by them compare...
OPERATING SYSTWM
Question 31 What is the output of this C program? #include #include void main() int mptr, *cptr mptr = (int*)malloc(sizeof(int)); printf("%d", "mptr); cptr = (int)calloc(sizeof(int),1); printf("%d","cptr); garbage 0 000 O garbage segmentation fault Question 8 1 pts If this program "Hello" is run from the command line as "Hello 12 3" what is the output? (char '1'is ascii value 49. char '2' is ascii value 50 char'3' is ascii value 51): #include<stdio.h> int main (int argc, char*argv[]) int...
C programming Question1 (a) Write a C program that will print out all command line arguments, in reverse order, one per line. Prefix each line with its index. 6 marks] (b) Consider this C code snippet int a- 100 int b- 42; inte p- &a; int q-b; p qi printf ("%d %d\n" ,a,*p); When this code is executed, what numbers will it print? [2 marks] (c) Consider this C program int main(int argc,char argv) char* target- "Apple" char vord[100] printf...
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