Question

you are going to write a program, fastfactor, to find all the inegral factors of a number (integer). the program must be written in C. note that in C (as in most languages) % is a remainder operator, so if x % 3 == 0 that means 3 is a factor of x. you are going to write fastfactor to work like a "standard" UNIX command: the user can invoke the command like fastfactor 12 13 which would output 12: 1 2 3 4 6 12 13: 1 13 or they can pass a file with a list of integers. for example, assume we have a file nums cat nums 12 13 4 if we run fastfactor < nums we would get 12: 1 2 3 4 6 12 13: 1 13 4: 1 2 4 (if you pass command line parameters and provide input, only the command line parameters are used.) please allow 64-bit integers to be provided (long long). print an error and exit with a non zero return code if the program encounters any negative numbers or anything that isn't a number. since these number can be quite big, we want to use all the available processors to work on it. use fork() to start up children processes to break up the work among processors. only one process, the parent, should generate the output, so the children will need to send output back to the parent through a pipe, see pipe(). the factors for each number must be printed in sorted order separated by a space on a single line. apart from getting extra credit, speed isn't important. however, if your program takes more than 60 seconds to factor 234121324120, you will not get credit for successful output because tests will time out. (that number takes less than 10 seconds to factor even with a simple implementation of fastfactor.)

Answer 1

#include<stdio.h>
#include<stdlib.h>
/*Simple program to find the factors of An integer,without using fork(),pipe()*/

int main()
{
    int *p,n,i,j;
    printf("Enter integer to find it's Factors:");
    scanf("%d",&n);
  
    // Parent process
    if(n<=0)
        printf("Enter positive integer ");
    else
    {
        printf("%d:",n);
        for(i=1;i<(n/2)+1;i++){
            if(n%i==0){
                printf(" %d",i);
            }
        }
        printf(" %d ",n);
    }
    return 0;
}

input Enter integer to find it's Factors:12345678 12345678: 12 3 69 18 47 94 141 282 423 846 14593 29186 43779 87558 131337 262674 685871 1371742 2057613 4115226 6172839 12345678 .Program finished with exit code Press ENTER t exit console Activate Windows Go to Settings to activate Winddw