Conditional Statements
Intermediate R
Filip Schouwenaars
DataCamp Instructor
if statement
if(condition) {
expr
}
x <- -3
if(x < 0) {
print("x is a negative number")
}
"x is a negative number"
if statement
if(condition) {
expr
}
x <- 5
if(x < 0) {
print("x is a negative number")
}
- No printout
else statement
if(condition) {
expr1
} else {
expr2
}
x <- -3
if(x < 0) {
print("x is a negative number")
} else {
print("x is either a positive number or zero")
}
"x is a negative number"
else statement
if(condition) {
expr1
} else {
expr2
}
x <- 5
if(x < 0) {
print("x is a negative number")
} else {
print("x is either a positive number or zero")
}
"x is either a positive number or zero"
else if statement
if(condition1) {
expr1
} else if(condition2) {
expr2
} else {
expr3
}
else if statement
x <- -3
if(x < 0) {
print("x is a negative number")
} else if(x == 0) {
print("x is zero")
} else {
print("x is a positive number")
}
"x is a negative number"
else if statement
x <- 0
if(x < 0) {
print("x is a negative number")
} else if(x == 0) {
print("x is zero")
} else {
print("x is a positive number")
}
"x is zero"
else if statement
x <- 5
if(x < 0) {
print("x is a negative number")
} else if(x == 0) {
print("x is zero")
} else {
print("x is a positive number")
}
"x is a positive number"
if, else if, else
x <- 6
if(x %% 2 == 0) {
print("divisible by 2")
} else if(x %% 3 == 0) {
print("divisible by 3")
} else {
print("not divisible by 2 nor by 3...")
}
"divisible by 2"
Let's practice!
Intermediate R
