#include <stdio.h>

int main()
{
    int age = 30;
    float temperature = 36.6;
    char grade = 'A';
    double pi = 3.1415926538;

    printf("Age: %d\n", age);
    printf("Temperature: %.1f\n", temperature);
    printf("Grade: %c\n", grade);
    printf("Pi: %.10f\n", pi);

    return 0;
}