author name and date

calculator.c

@@ -1,6 +1,6 @@
 /**
- * Author:
- * Date:
+ * Author: Alisha
+ * Date: 5-10-2023
  *
  * This programs provides basic calculator functionality
  * allowing a user to enter two operands and to compute
@@ -10,6 +10,63 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
+double calculator( int choice, double a, double b );
+double calculator( int choice, double a, double b ){
+  double result= 0.0;
+    if(choice == 1)
+   {
+    result = a + b;
+      printf("Result: %.2f\n", result);
+
+  }
+   else if(choice == 2) 
+  {
+    result = a - b;
+    printf("%.2f", result);
+
+  }
+   else if(choice == 3)
+  {
+    result = a * b;
+      printf("Result: %.2f\n", result);
+
+
+  } //TODO: handle this case (division)
+  else if(choice == 4) 
+  {
+    if (b != 0) {
+        result = a / b;
+        printf("Result: %.2f\n", result);
+
+      } else {
+        printf("Cannot divide by zero.\n");
+      }
+
+
+  }//TODO: handle this case (minimum)
+   else if(choice == 5) 
+  {
+    result = fmin(a, b);
+      printf("Result: %.2f\n", result);
+
+
+  }//TODO: handle this case (log_a(b))
+   else if(choice == 6) 
+  {
+    if (a > 0 && a != 1) {
+        result = log(b) / log(a);
+        printf("Result: %.2f\n", result);
+      } else {
+        printf("Invalid base for logarithm.\n");
+      }
+
+  } 
+  else
+  {
+    printf("Please input a valid operator next time");
+  }
+  return result;
+}
 
 int main(int argc, char **argv) {
 
@@ -30,23 +87,9 @@ int main(int argc, char **argv) {
   printf("(5) Minimum\n");
   printf("(6) log_a(b)\n");
   scanf("%d", &choice);
-
-  if(choice == 1) {
-    printf("%f", a + b);
-  } else if(choice == 2) {
-    result = a - b;
-    printf("%f", result);
-  } else if(choice == 3) {
-    //TODO: handle this case (multiplication)
-  } else if(choice == 4) {
-    //TODO: handle this case (division)
-  } else if(choice == 5) {
-    //TODO: handle this case (minimum)
-  } else if(choice == 6) {
-    //TODO: handle this case (log_a(b))
-  } else {
-    printf("Please input a valid operator next time");
-  }
-
+  result= calculator(choice,  a, b);
+  printf("Result: %.2f\n", result);
+
+
   return 0;
 }

leapYear.c

@@ -39,7 +39,7 @@ int main(int argc, char **argv) {
     numPassed = numPassed + 1;
   }
 
-  year = 2001;
+  year = 2002;
   printf("Test Case 2: year = %d: ", year);
   if(isLeapYear(year)) {
     printf("FAILED!\n");
@@ -49,7 +49,7 @@ int main(int argc, char **argv) {
     numPassed = numPassed + 1;
   }
 
-  year = 2100;
+  year = 2006;
   printf("Test Case 3: year = %d: ", year);
   if(isLeapYear(year)) {
     printf("FAILED!\n");
@@ -58,26 +58,72 @@ int main(int argc, char **argv) {
     printf("PASSED!\n");
     numPassed = numPassed + 1;
   }
-
   //TODO: write *at least* 3 more of your own
   //      test cases here, they should all pass!
 
+  year = 1600;
+  printf("Test Case 4: year = %d: ", year);
+  if(!isLeapYear(year)) {
+    printf("FAILED!\n");
+    numFailed = numFailed + 1;
+  }
+   else 
+  {
+    printf("PASSED!\n");
+    numPassed = numPassed + 1;
+  }
+
+  year = 2024;
+  printf("Test Case 5: year = %d: ", year);
+  if(!isLeapYear(year)) 
+  {
+    printf("FAILED!\n");
+    numFailed = numFailed + 1;
+  } 
+  else 
+  {
+    printf("PASSED!\n");
+    numPassed = numPassed + 1;
+  }
+
+  year = 2020;
+  printf("Test Case 6: year = %d: ", year);
+  if(!isLeapYear(year)) 
+  {
+    printf("FAILED!\n");
+    numFailed = numFailed + 1;
+  }
+   else
+  {
+    printf("PASSED!\n");
+    numPassed = numPassed + 1;
+  }
+
   printf("\n\n");
   printf("Summary:\n");
   printf("Number of test cases passed: %d\n", numPassed);
   printf("Number of test cases failed: %d\n", numFailed);
   printf("Percentage Passed: %.2f%%\n", (double) numPassed / (numPassed + numFailed) * 100.0);
 
-  if(reportPass) {
+  if(reportPass)
+  {
     return numPassed;
   } else {
     return numFailed;
   }
 }
-
-int isLeapYear(int year) {
-  //TODO: Write your logic here
+//TODO: Write your logic here
   //      The year is stored in the variable year
   //      Your function should return true (1) if it represents a leap year
   //      and false (0) if it does not.
+int isLeapYear(int year) {
+  if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
+  {
+    return 1;
+  } 
+  else
+  {
+    return 0;
+  }
+
 }

taxes.c

@@ -27,9 +27,31 @@ int main(int argc, char **argv) {
     printf("How many children do you have? ");
     scanf("%d", &numChildren);
   }
-
-  //TODO: compute the tax, child credit, and total tax here
-
+   if (agi <= 19900)
+  {
+    tax = agi * 0.1;
+  }
+   else if (agi <= 81050) 
+  {
+    tax = 2000 + (agi - 19900) * 0.15;
+  }
+   else if (agi <= 172750) 
+  {
+    tax = 7000 + (agi - 81050) * 0.2;
+  }
+   else 
+ {
+    tax = 17000 + (agi - 172750) * 0.25;
+
+ }
+  // Compute the child credit based on the number of children
+  childCredit = numChildren * 1000;
+
+  // Compute the total tax
+  totalTax = tax - childCredit;
+
+  //display result
+  printf("\nTax Calculation:\n");
   printf("AGI:          $%10.2f\n", agi);
   printf("Tax:          $%10.2f\n", tax);
   printf("Child Credit: $%10.2f\n", childCredit);