R编程中将字符串从小写转换为大写——toupper()函数

R 编程中的toupper()方法用于将小写字符串转换为大写字符串。

Syntax: toupper(s)

Return: Returns the uppercase string.

示例 1：

# R program to convert string
# from lowercase to uppercase
  
# Given String
gfg <- "Geeks For Geeks"
  
# Using toupper() method
answer <- toupper(gfg)
  
print(answer)

输出：

[1] "GEEKS FOR GEEKS"

示例 2：

# R program to convert string
# from lowercase to uppercase
  
# Given String
gfg <- "The quick brown fox jumps over the lazy dog"
  
# Using toupper() method
answer <- toupper(gfg)
  
print(answer)

输出：

[1] "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG"