//Exercise #define __STDC_WANT_LIB_EXT1__ 1#define INC 10#define
BUF 50#define CPS CLOCKS_PER_SEC#include #include #include #include
#include #include #include bool coorRead(char* coor, size_t*
length, double* coorSave);int main(void) {double** receiver =
NULL;double transmitter[2] = {0.0};double dis = 0.0;double maxdis =
-1.0;double* mdisP[2] = {NULL};double pmin = 0.0;double ptrans =
0.0;double power = 0.0;char ans = 'y';unsigned int n = 0;unsigned
int c = 0;size_t length = BUF;char coor[length];do {if (c == n) {c
+= INC;receiver = realloc(receiver, c *
sizeof(double*));}*(receiver + n) = calloc(2,
sizeof(double));printf("Type %d%s point's coordinates (x%d, y%d):
", n+1, (!n) ? "st" : (n == 1) ? "nd" : (n == 2) ? "rd" : "th",
n+1, n+1);gets_s(coor, BUF);fflush(stdin);while(!coorRead(coor,
&length, *(receiver + n))) {printf("Please type the coordinates
in that form: (x%d, y%d) ", n+1, n+1);gets_s(coor,
BUF);fflush(stdin);}n++;if (n > 1) {printf("Do you want to add
another point? (yes or no) ");while ((ans = tolower(getchar())) !=
'y' && ans != 'n') {fflush(stdin);printf("Please type
\"yes\" or \"no\": ");}}fflush(stdin);} while(ans == 'y');for (int
i = 0; i < n-1; i++) {for (int j = i+1; j < n; j++) {dis =
sqrt(pow((receiver[i][0] - receiver[j][0]), 2.0) +
pow((receiver[i][1] - receiver[j][1]), 2.0));if(dis > maxdis)
{maxdis = dis;mdisP[0] = receiver[i];mdisP[1] =
receiver[j];}}}transmitter[0] = (*mdisP[0] + *(mdisP[0]+1)) /
2.0;transmitter[1] = (*mdisP[1] + *(mdisP[1]+1)) /
2.0;printf("\nType the value for the minimum power (Pmin):
");scanf_s(" %lf", &pmin);ptrans =
pmin*maxdis*maxdis;printf("\nTransmitter's coordinates should be:
(%.2lf, %.2lf)", transmitter[0], transmitter[1]);printf("\n\nThe
transmitters power in order receivers receive %lfW is %.2lf.",
pmin, ptrans);for(int i = 0; i < n; i++) {dis =
sqrt(pow((receiver[i][0] - transmitter[0]), 2.0) +
pow((receiver[i][1] - transmitter[1]), 2.0));power =
ptrans/(dis*dis);printf("\nReceiver #%d will receive %.2lf
Watt%s.", i+1, power, (power != 1.0) ? "s" :
"");}printf("\n\n\tHave a nice day!!!\n\n");clock_t start =
clock();while((clock() - start) / CPS < 5);return 0;}bool
coorRead(char* coor, size_t* len, double* coorSave) {char del[] =
"() ,";char* ptr = NULL;char* pNum1 = strtok_s(coor, len, del,
&ptr);char* pNum2 = strtok_s(NULL, len, del,
&ptr);if(!pNum1 || !pNum2)return false;*coorSave =
atof(pNum1);*(coorSave + 1) = atof(pNum2);return !((!*coorSave
&& *pNum1 != '0' || !(*coorSave + 1) && *pNum2 !=
'0'));}
