Changed the parameter name from operation to operationType in the function performOperation in the programmingMode.c file and also in the calculator.h file

src/main/c/calculator.h

@@ -85,6 +85,6 @@ double ConClock(double time, int startingUnit, int endingUnit);
 
 double ConTime(double time, int startingUnit, int endingUnit);
 
-int performOperation(int num1, char operator, int num2);
+int performOperation(int num1, char operatorType, int num2);
 
 #endif // CALCULATOR

src/main/c/programmingMode.c

@@ -22,8 +22,8 @@ char getOperatorInput() {
 }
 
 // Calculation
-int performOperation(int num1, char operator, int num2) {
-    switch (operator) {
+int performOperation(int num1, char operatorType, int num2) {
+    switch (operatorType) {
         case '+':
             return num1 + num2;
         case '-':