48 lines
1.0 KiB
R
48 lines
1.0 KiB
R
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Simple Calculator in R
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# Program make a simple calculator
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# that can add, subtract, multiply
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# and divide using functions
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add <- function(x, y) {
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return(x + y)
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}
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subtract <- function(x, y) {
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return(x - y)
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}
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multiply <- function(x, y) {
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return(x * y)
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}
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divide <- function(x, y) {
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return(x / y)
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}
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# take input from the user
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print("Select operation.")
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print("1.Add")
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print("2.Subtract")
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print("3.Multiply")
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print("4.Divide")
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choice = as.integer(readline(prompt="Enter choice[1/2/3/4]: "))
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num1 = as.integer(readline(prompt="Enter first number: "))
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num2 = as.integer(readline(prompt="Enter second number: "))
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operator <- switch(choice,"+","-","*","/")
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result <- switch(choice, add(num1, num2), subtract(num1, num2), multiply(num1, num2), divide(num1, num2))
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print(paste(num1, operator, num2, "=", result))
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Output
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[1] "Select operation."
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[1] "1.Add"
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[1] "2.Subtract"
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[1] "3.Multiply"
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[1] "4.Divide"
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Enter choice[1/2/3/4]: 4
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Enter first number: 20
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Enter second number: 4
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[1] "20 / 4 = 5"
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