如何在Ballerina中获取变量的类型？

function main() {
    int a = 10;
    float b = 3.14;
    string c = "Hello";
    
    string typeOfA = typeof a;
    string typeOfB = typeof b;
    string typeOfC = typeof c;
    
    io:println("Type of 'a': " + typeOfA);
    io:println("Type of 'b': " + typeOfB);
    io:println("Type of 'c': " + typeOfC);
}

Type of 'a': int
Type of 'b': float
Type of 'c': string

function main() {
    int a = 10;
    float b = 3.14;
    string c = "Hello";
    
    if (a is int) {
        io:println("'a' is an integer");
    }
    
    if (b is float) {
        io:println("'b' is a float");
    }
    
    if (c is string) {
        io:println("'c' is a string");
    }
}

'a' is an integer
'b' is a float
'c' is a string