Storing values in array in while loop - c

Question

So the program is supposed to calculate the temperature from an initial temp given by the user which is then changed based on wind, humidity, and condition. first get a starting temperature from the user, then display a menu of choices that consist of entering wind speed, entering humidity, entering the condition, displaying the current temperature, displaying the last 1000 temperatures after the initial temp has been modified and displaying the sum of all temperatures.
I have done most of it but I'm having problems with how to store and display the last 1000 temperatures. I'm supposed to use an array in this program but I'm not sure how to use it to get what I need. Help, please.
#define _CRT_SECURE_NO_WARNINGS
#define CLS system("cls")
#define PAUSE system("pause")
#include <stdio.h>
#include <stdlib.h>
// PROTOTYPING FUNCTIONS
void askTemp();
float convertC(float f);
void displayMenu();
char getChoice();
char getCondChoice();
float getHumid();
float getTemp();
float getWind();
main() {
// INITIALIZE VARIABLES
float temp;
float wind = 5;
float humid = 20;
int trump = 0;
char choice = 'A';
int num;
char cond = 'S';
char condChoice;
float celsius;
int i = 0;
int j = 0;
int k = 0;
float temp2 = 0;
float wind2 = 0;
float humid2 = 0;
int x = 0;
askTemp();
temp = getTemp();
do{
displayMenu();
choice = getChoice();
switch (choice){
case 'W': // Get Wind
wind = getWind();
break;
case 'H': // Get the humidity
humid = getHumid();
break;
case 'C': // Enter subswitch statement to get condition
condChoice = getCondChoice();
switch (condChoice){ // gets condition
case 'S':
cond = 'S';
break;
case 'C':
cond = 'C';
break;
case 'R':
cond = 'R';
break;
}// END SWITCH
case 'T': // display current temperature
if (temp != temp2 || wind != wind2 || humid != humid2){ // apply degree changes based on humid, wind, and cond
if (wind > 100)
temp = temp - (temp * .03);
if (wind < 10)
temp = temp + (temp * .025);
if (humid > 75)
temp = temp + (temp * .058933);
if (humid < 20)
temp = temp - (temp * .0162);
if (cond == 'S' && wind > 30)
temp = temp + (temp * .01);
if (cond == 'S' && wind == 0)
temp = temp + (temp * .005);
if (cond == 'R')
temp = temp - (temp * .02);
if (cond == 'C' && humid > 75)
temp = temp + (temp * .01);
if (cond == 'C' && humid < 75)
temp = temp + (temp * .005);
if (wind > 30 && humid > 75 && cond == 'S')
temp = temp;
wind2 = wind; // assigned variables so program does not apply condition changes multiple times for same temp
humid2 = humid;
temp2 = temp;
}// END IF
celsius = convertC(temp2);
printf("The Current temperature is %.1ff/%.1fc degrees Celsius\n", temp2, celsius);
PAUSE;
break;
case 'P': // Display previous 1000 temperatures
break;
case 'A': // Display average of all temps entered
break;
}// END SWITCH
} while (choice != 'Q');
} // END MAIN
void askTemp(){
printf("What is the current temperature: \n");
return;
}// end askTemp
void displayMenu(){
CLS;
printf("W. Enter Wind Speed\n");
printf("H. Enter Humidity\n");
printf("C. conditions\n");
printf("T. Current Temperature\n");
printf("P. Previous Temps\n");
printf("A. Average Temperature\n");
printf("Q. Quit\n");
return;
} // end currentTemp
char getChoice(){
char result;
scanf("%c", &result);
result = toupper(result);
return result;
}// end getChoice
char getCond(){
char result;
}// end getCond
char getCondChoice(){
char result;
printf("S for sunny, C for cloudy, R for rainy\n");
scanf(" %c", &result);
result = toupper(result);
do{
if (result != 'S' && result != 'C' && result != 'R'){
printf("Invalid input try again\n");
scanf(" %c", &result);
result = toupper(result);
}
} while (result != 'S' && result != 'C' && result != 'R');
return result;
}// end getCond
float getHumid(){
float result;
scanf("%f", &result);
return result;
}// end getHumid
float getTemp(){
float result;
scanf("%f", &result);
do{
if (result < -50 || result > 150){
printf("Invalid temperature try again\n");
scanf("%f", &result);
}
} while (result < -50 || result > 150);
return result;
}// end getTemp
float getWind(){
float result;
scanf("%f", &result);
return result;
}// end getWind
float convertC(float f){
float t;
t = (f - 32) / 1.8;
return(t);
}// end convert

Answer 1

You declare an array of 1000 float like this:
float saved_temperatures[1000];
You store a value in it by indexing into the array, and using it like a variable.
saved_temperatures[i] = temp;
++i;
i is an indexing variable, and you should make sure it starts at zero and is always less than 1000. The valid index range for saved_temperatures is 0..999.
for (int i = 0; i < 1000; ++i) {
printf("index %d temperature %f\n", i, saved_temperatures[i]);
}