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C# program to count upper and lower case characters in a given string
To count uppercase characters in a string, check the following condition −
myStr[i]>='A' && myStr[i]<='Z'
To count lower case characters in a string, check the following condition −
myStr[i]>='a' && myStr[i]<='z'
Example
You can try to run the following code to count upper and lower case characters in a given string.
using System; public class Demo { public static void Main() { string myStr; int i, len, lower_case, upper_case; myStr = "Hello"; Console.Write("String: "+myStr); lower_case = 0; upper_case = 0; len = myStr.Length; for(i=0; i<len; i++) { if(myStr[i]>='a' && myStr[i]<='z') { lower_case++; } else if(myStr[i]>='A' && myStr[i]<='Z') { upper_case++; } } Console.Write("
Characters in lowecase: {0}
", lower_case); Console.Write("Characters in uppercase: {0}
", upper_case); } }
Output
String: Hello Characters in lowecase: 4 Characters in uppercase: 1
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