How do you make a calculator using if-else in Java?

How do you make a calculator using if-else in Java?

Algorithm

1. Take two numbers and the operator as inputs from the user using the Scanner class..
2. Use nested if/else statements to write the logic for the operations.
3. Initialize a new integer which will store the answer initially as 0.
4. Print the answer.

What is if condition in Java?

The Java if statement is the most simple decision-making statement. It is used to decide whether a certain statement or block of statements will be executed or not i.e if a certain condition is true then a block of statement is executed otherwise not.

How do you write an if-then statement in Java?

Java has the following conditional statements:

1. Use if to specify a block of code to be executed, if a specified condition is true.
2. Use else to specify a block of code to be executed, if the same condition is false.
3. Use else if to specify a new condition to test, if the first condition is false.

How do you make a calculator with if else?

Example 2: Calculator Program in C using if else if statement

1. #include
2. int main()
3. {
4. // declare local variables.
5. char opt;
6. int n1, n2;
7. float res;
8. printf (” Select an operator (+, -, *, /) to perform an operation in C calculator \n “);

How do you make a calculator using if else in C++?

void fun(char op, float a, float b) { if(op==’+’) { } else if(op==’-‘) { You should then get the expected result. if (a+b) just calculates the expression using the two values of the user, and if it’s non zero, it’s considered as true.

How do you use if statements?

Use the IF function, one of the logical functions, to return one value if a condition is true and another value if it’s false. For example: =IF(A2>B2,”Over Budget”,”OK”) =IF(A2=B2,B4-A4,””)

How do you write an if-then statement?

In if-then form, the statement is If Sally is hungry, then she eats a snack. The hypothesis is Sally is hungry and the conclusion is she eats a snack.

How do you make a function on a calculator?

Example 4: Calculator Program in C using function and switch statement

1. #include
2. #include
3. #include
4. #include
5. // function declarations.
6. int addition();
7. int subtract();
8. int multiply();