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include «stdio.h void displaymenu(void) printf(" printf" Enter Choicen") printf Set (a), Clear (c), Toggle (t)\n"): printf("...
devmem2.c #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> #include <errno.h> #include <signal.h> #include <fcntl.h> #include...
devmem2.c
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include <ctype.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/mman.h>
#define FATAL do { fprintf(stderr, "Error at line %d, file %s
(%d) [%s]\n", \
__LINE__, __FILE__, errno, strerror(errno)); exit(1); }
while(0)
#define MAP_SIZE 4096UL
#define MAP_MASK (MAP_SIZE - 1)
int main(int argc, char **argv) {
int fd;
void *map_base = NULL, *virt_addr = NULL;
unsigned long read_result, writeval;
off_t target;
int access_type = 'w';
if(argc...
Read the following code, threaded recursive calculation of Fibonacci number of n: #include <stdio.h> #include <stdlib.h>...
Read the following code, threaded recursive calculation of Fibonacci number of n: #include <stdio.h> #include <stdlib.h> #include <pthread.h> void *fib(void *arg); int main(int argc, char **argv){ int n = atoi(argv[1]); printf("%d\n", (int)fib(n)); } void *fib(void *arg){ int n; pthread_t thread1; pthread_t thread2; void *a; void *b; int c; n = (int)arg; if (n <= 0) return 0; if (n == 1) return 1; pthread_create(&thread1, NULL, fib, n-1); ...
can someone help me with changing this to c++ language #include <stdlib.h> #include <stdio.h> #include <pthread.h>...
can someone help me with changing this to c++ language #include <stdlib.h> #include <stdio.h> #include <pthread.h> #include <string.h> #include <dirent.h> #include <sys/wait.h> #include <time.h> #include <sys/stat.h> #include <unistd.h> char *pathLog; char *pathRep; struct stat attr; int fileNum, curNum; char *create_logPath(char *directory); void *funcChecker(void *pathSub); void *funcprintTimeAndChanges(void *pathSub); void main(int argc, char *argv[]) { if(argc < 3) { printf("%s must be executed with exactly two additional arguments (pathRep, pathSub)!\n", argv[0]); printf("Typed count is %d\n", argc); printf("Aborted...
#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...
PLease explain output of these two programs: 1. #include <stdio.h> typedef struct { char *name; int...
PLease explain output of these two programs: 1. #include <stdio.h> typedef struct { char *name; int x, y; int h, w; } box; typedef struct { unsigned int baud : 5; unsigned int div2 : 1; unsigned int use_external_clock : 1; } flags; int main(int argc, char** argv){ printf("The size of box is %d bytes\n", sizeof(box)); printf("The size of flags is %d bytes\n", sizeof(flags)); return 0; } 2. #include <stdio.h> #include <string.h> /* define simple structure */ struct { unsigned...
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...
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...
#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
so in this code, it computes the sum 1+2+....+n but i want it to compute 2*(1+2+....+n)...
so in this code, it computes the sum 1+2+....+n but i want it to compute 2*(1+2+....+n) using semaphores implement solution to the critical section problem #include #include int sum; /* this data is shared by the thread(s) */ void *runner(void *param); /* threads call this function */ int main(int argc, char *argv[]) { pthread_t tid; /* the thread identifier */ pthread_attr_t attr; /* set of thread attributes */ if (argc != 2) { fprintf(stderr,"usage: a.out \n"); return -1; } if...
Combine two codes (code 1) to get names with(code 2) to get info: Code 1: #include<unistd.h>...
Combine two codes (code 1) to get names with(code 2) to get info: Code 1: #include<unistd.h> #include<sys/types.h> #include<sys/stat.h> #include<fcntl.h> #include<dirent.h> #include<stdio.h> #include<stdlib.h> void do_ls(char []); int main(int argc,char *argv[]) { if(argc == 1) do_ls("."); else while(--argc){ printf("%s:\n",*++argv); do_ls(*argv); } } void do_ls(char dirname[]) { DIR *dir_ptr; struct dirent *direntp; if((dir_ptr = opendir(dirname)) == NULL) fprintf(stderr,"ls1:cannot open %s\n",dirname); else { while((direntp = readdir(dir_ptr)) != NULL) printf("%s\n",direntp->d_name); closedir(dir_ptr); } } ____________________________ code 2: #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> void show_stat_info(char *,...
devmem2.c
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include <ctype.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/mman.h>
#define FATAL do { fprintf(stderr, "Error at line %d, file %s
(%d) [%s]\n", \
__LINE__, __FILE__, errno, strerror(errno)); exit(1); }
while(0)
#define MAP_SIZE 4096UL
#define MAP_MASK (MAP_SIZE - 1)
int main(int argc, char **argv) {
int fd;
void *map_base = NULL, *virt_addr = NULL;
unsigned long read_result, writeval;
off_t target;
int access_type = 'w';
if(argc...
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...
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