Can someone please help me understand this code deeply please it's about constants in C language under data types...

Question

#include <stdio.h>

int main() {
const double PI = 3.14;
printf("%f", PI);

return 0;
}

Answer 1

When you declare a constant, you use the const reserved word. In this code you declare a constant of type double, which is called PI. Then, in the printer function, you pass %d because the constant is double and then you pass the constant PI
Hope it helped :)