we creating an pointer variable then used it.

#include <stdio.h>

int main() {
  int myAge = 43;  // An int variable
  int* ptr = &myAge;  // A pointer variable, with the name ptr, that stores the address of myAge

  // Output the value of myAge (43)
  printf("%d\n", myAge);

  // Output the memory address of myAge (0x7ffe5367e044)
  printf("%p\n", &myAge);

  // Output the memory address of myAge with the pointer (0x7ffe5367e044)
  printf("%p\n", ptr);

  return 0;
}

we doing call a function multiple times.

#include <stdio.h>

// Create a function
void myFunction() {
  printf("I just got executed!\n");
}

int main() {
  myFunction(); // call the function
  myFunction(); // call the function
  myFunction(); // call the function
  return 0;
}

about c program

#include <stdio.h>

int main() {
  printf("Hello World!");
  return 0;
}

we are doing print sum of two numbers with the help of addition operator.

#include <stdio.h>

int main() {
  int myNum = 100 + 50;
  printf("%d", myNum);
  return 0;
}

we are doing print Sum of variable and Numbers with the help of Addition Operator

#include <stdio.h>

int main() {
  int sum1 = 100 + 50;        // 150 (100 + 50)
  int sum2 = sum1 + 250;      // 400 (150 + 250)
  int sum3 = sum2 + sum2;     // 800 (400 + 400)
  printf("%d\n", sum1);
  printf("%d\n", sum2);
  printf("%d\n", sum3);
  return 0;
}