Basically, I want to make a calculator that gets the input from the user from which operation he wants to use, but I was testing what happens if after the user chooses the input, my code has a condition that prints depending what was the user input. Why am I getting this error? What is wrong with the if and else statement?
My code:
Adicao = "Adição"
Subtracao = "Subtração"
Multiplicacao = "Multiplicação"
Divisao = "Divisão"
print("Choice of operations:")
cat("1.", Adicao)
cat("2.", Subtracao)
cat("3.", Multiplicacao)
cat("4.", Divisao)
escolha <- as.integer(readline(prompt="Enter your choice: "))
if(escolha = 1){
print("Cool! You choose addition")
} else {
print("You didnt choose addition ")
}
The error I get:
> escolha <- as.integer(readline(prompt="Enter your choice: "))
Enter your choice: 2
> if(escolha = 1){
Error: unexpected '=' in "if(escolha ="
> print("Cool! You choose addition")
[1] "Cool! You choose addition"
> } else {
Error: unexpected '}' in "}"
> print("You didnt choose addition ")
[1] "You didnt choose addition "
> }
Error: unexpected '}' in "}"
CodePudding user response：
You have to use == equality operator for comparison in if statement which return logical (TRUE or FALSE) , = used to assign value to object
if(escolha == 1){
print("Cool! You choose addition")
} else {
print("You didnt choose addition ")
}
CodePudding user response：
print("Choice of operations:")
cat("1.", "Add\t")
cat("2.", "Subtract\t")
cat("3.", "Multiply\t")
cat("4.", "Divide\n")
userSelected <- as.integer(readline(prompt="Enter your choice: "))
if(all.equal(1, as.integer(userSelected)) == TRUE) {
print("Add")
} else {
print("You didnt choose addition")
}