# Basic syntax of for loop:
for (i in sequence) { code to be repeated
}
# Example usage of for loop:
for (i in 1:5) { print(i)
}
# Basic syntax of while loop:
while (condition_is_true) { code to be repeated
}
# Example usage of while loop:
i = 1
while (i < 5) {	# True while i is less than 5 print(i) i = i + 1	# Increment i each iteration
}
# Note, you can completely exit from a loop with "break", or skip to the
#	next iteration of a loop with "next"
# Example of next and break:
for (i in 1:5) { if (i == 2) { # Skip to next iteration if i = 2 next } if (i == 4) { # Exit loop entirely if i = 4 break } print(i)
}
# Returns:
[1] 1
[1] 3

x <- c(2,5,3,9,8,11,6)
count <- 0
for (val in x) {	if(val %% 2 == 0) {	count = count+1	}
}

for (val in x) {
if(val %% 2 == 0) count = count+1
}

for (val in sequence)
{
statement
}

x <- c(2,5,3,9,8,11,6)
for (val in x) { statement
}