Whileループ

中級 R

Filip Schouwenaars

DataCamp Instructor

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
中級 R

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
中級 R

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}
中級 R

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}

"ctr is set to 1"
中級 R

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}

"ctr is set to 2"
中級 R

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}

"ctr is set to 7"
中級 R

whileループ

while(condition) {
  expr
}

while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}
  • 印刷なし
中級 R

whileループ

ctr <- 1
while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}

"ctr is set to 1"
"ctr is set to 2"
...
"ctr is set to 7"

ctr

8
中級 R

whileループ

ctr <- 1
while(ctr <= 7) {
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}
中級 R

無限 while ループ

ctr <- 1
while(ctr <= 7) {
  print(paste("ctr is set to", ctr))

}

"ctr is set to 1"
"ctr is set to 1"
"ctr is set to 1"
"ctr is set to 1"
"ctr is set to 1"
"ctr is set to 1"
"ctr is set to 1"
...
中級 R

break文

ctr <- 1
while(ctr <= 7) {
  if(ctr %% 5 == 0) {
    break
  }
  print(paste("ctr is set to", ctr))
  ctr <- ctr + 1
}

"ctr is set to 1"
"ctr is set to 2"
"ctr is set to 3"
"ctr is set to 4"
中級 R

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中級 R

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