C program:

Partial program needed to be completed in c programming language.

// spiral of integers 0, 1, 2 // command line interface with user

#include  #include  #include  

#define LINELIMIT 30 #define NUMLIMIT LINELIMIT-8 

char *comline,*number,*xchars,*ychars, *commaloc; size_t bufsize=LINELIMIT; size_t numsize=NUMLIMIT;

int whereis (int P, int* Xval, int* Yval) // completed { }

int whatsat (int X, int Y) // to be completed { // returns the integer found at coordinates X, Y in the spiral }

int main() {

int P, x, y, i, go_on=1, command,N, cindex;

comline=malloc(bufsize*sizeof(char)); number=malloc(numsize*sizeof(char)); xchars=malloc(numsize*sizeof(char)); ychars=malloc(numsize*sizeof(char));

 while(go_on) { 

 printf("Command: "); 

memset(comline,' ',bufsize); getline(&comline,&bufsize,stdin);

if (memcmp(comline,"quit",strlen("quit"))==0) go_on=0; else if (memcmp(comline,"whereis",strlen("whereis"))==0)

{ strcpy(number,comline+strlen("whereis")); N=atoi(number); if (N

 i=whereis(N,&x,&y); 

 printf("%d is at %d,%d ",N,x,y); } 

} else if (memcmp(comline,"whatsat",strlen("whatsat"))==0)

{

// find comma index = C commaloc=strpbrk(comline,",");

if (commaloc==NULL) printf("comma missing "); else { // overwrite comma with null byte

*commaloc=0; // copy first number to xchars strcpy(xchars,comline+strlen("whatsat")); // copy second number to ychars strcpy(ychars,commaloc+1); // convert strings to numbers x=atoi(xchars); y=atoi(ychars); // find contents of the spiral at x,y i=whatsat(x,y); if (i==-1) printf("co-ordinates out of range ");

else printf("%d is at %d,%d ",i,x,y); }

} else printf("invalid command %s ",comline);

 } printf("Goodbye "); 

}

can be arranged on a 2-dimensional plane in the form of a The non-negative integers 0, 1, 2, 3 rectangular spiral thus 12 (2.2) 13 14 (0,2) 16 15 3 2 10 5 8 Complete the given C program by adding two functions whereis and whatsat defined as follows: can be arranged on a 2-dimensional plane in the form of a The non-negative integers 0, 1, 2, 3 rectangular spiral thus 12 (2.2) 13 14 (0,2) 16 15 3 2 10 5 8 Complete the given C program by adding two functions whereis and whatsat defined as follows