C # According to the user input string, there are several output uppercase letters, lowercase letter has several

static void Main (string[] args)
{

Depending on the user input string, there are several uppercase and lowercase letters in the output.
Console.WriteLine ("Please enter a line in English code");
string s = Console.ReadLine (); Accepts the input value with a string.
int i = 0;
Int J = 0;//I is the number of uppercase, and j is the lowercase number.
foreach (char s1 in s)
{
if (S1 >= ' A ' && s1 <= ' Z ')
{
i++;
}
else if (s1>= ' a ' &&s1<= ' Z ')
{
j + +;
}
Continue If you don't enter an English letter, you jump out of the loop.
}
Console.WriteLine ("There are {0} in uppercase letters, and {1} for lowercase characters.") ", i,j);

}

Operation Result:

C # According to the user input string, there are several output uppercase letters, lowercase letter has several