Booleans and conditionals exercise complete

Author: kb122215

booleans-and-conditionals/exercises/part-1.js

@@ -1,11 +1,16 @@
 // Declare and initialize the variables for exercise 1 here:
-
+let engineIndicatorLight = "red blinking";
+let spaceSuitsOn = true;
+let shuttleCabinReady = true;
+let crewStatus = spaceSuitsOn && shuttleCabinReady;
+let computerStatusCode = 200;
+let shuttleSpeed = 15000;
 // BEFORE running the code, predict what will be printed to the console by the following statements:
 
 if (engineIndicatorLight === "green") {
-   console.log("engines have started");
+  console.log("engines have started");
 } else if (engineIndicatorLight === "green blinking") {
-   console.log("engines are preparing to start");
+  console.log("engines are preparing to start");
 } else {
-   console.log("engines are off");
+  console.log("engines are off");
 }

booleans-and-conditionals/exercises/part-2.js

@@ -8,14 +8,29 @@ let shuttleSpeed = 15000;
 // 3) Write conditional expressions to satisfy the following safety rules:
 
 // a) If crewStatus is true, print "Crew Ready" else print "Crew Not Ready".
-
+if (crewStatus) {
+  console.log("Crew Ready");
+} else {
+  console.log("Crew Not Ready");
+}
 
 // b) If computerStatusCode is 200, print "Please stand by. Computer is rebooting." Else if computerStatusCode is 400, print "Success! Computer online." Else print "ALERT: Computer offline!"
-
+if (computerStatusCode === 200) {
+  console.log("Please stand by. Computer is rebooting.");
+} else if (computerStatusCode === 400) {
+  console.log("Success! Computer online.");
+} else {
+  console.log("ALERT: Computer offline!");
+}
 
 // c) If shuttleSpeed is > 17,500, print "ALERT: Escape velocity reached!" Else if shuttleSpeed is < 8000, print "ALERT: Cannot maintain orbit!" Else print "Stable speed".
-
-
+if (shuttleSpeed > 17500) {
+  console.log("ALERT: Escape velocity reached!");
+} else if (shuttleSpeed < 8000) {
+  console.log("ALERT: Cannot maintain orbit!");
+} else {
+  console.log("Stable speed.");
+}
 // 4) PREDICT: Do the code blocks shown in the 'predict.txt' file produce the same result?
 
-console.log(/* "Yes" or "No" */);
+console.log("Yes");

booleans-and-conditionals/exercises/part-3.js

@@ -1,7 +1,25 @@
-let engineIndicatorLight = 'red blinking';
+let engineIndicatorLight = "red blinking";
 let fuelLevel = 21000;
 let engineTemperature = 1200;
 
+if (
+  fuelLevel < 1000 ||
+  engineTemperature > 3500 ||
+  engineIndicatorLight === "red blinking"
+) {
+  console.log("ENGINE FAILURE IMMINENT!");
+} else if (fuelLevel <= 5000 || engineTemperature > 2500) {
+  console.log("Check fuel level. Engines running hot.");
+} else if (fuelLevel > 20000 && engineTemperature <= 2500) {
+  console.log("Full tank. Engines good.");
+} else if (fuelLevel > 10000 && engineTemperature <= 2500) {
+  console.log("Fuel level above 50%. Engines good.");
+} else if (fuelLevel > 5000 && engineTemperature <= 2500) {
+  console.log("Fuel level above 25%. Engines good.");
+} else {
+  console.log("Fuel and engine status pending...");
+}
+
 /* 5) Implement the following checks using if/else if/else statements:
 
 a) If fuelLevel is above 20000 AND engineTemperature is at or below 2500, print "Full tank. Engines good."
@@ -22,3 +40,9 @@ f) Otherwise, print "Fuel and engine status pending..." */
 
 /* 6) b) Code the following if/else check:
 If fuelLevel is above 20000 AND engineIndicatorLight is NOT red blinking OR commandOverride is true print "Cleared to launch!" Else print "Launch scrubbed!" */
+let commandOverride = true;
+if ((fuelLevel > 20000 && engineIndicatorLight !== 'red blinking') || commandOverride) {
+    console.log("Cleared to launch");
+} else {
+    console.log("Launch scrubbed!");
+}