Pass reference of an int value into function

#include <stdio.h>

void f(int *k) {
  *k = *k + 10; 
}

main ( ) {
  int i;
  i = 0;
  
    printf ("The value of i before call %d \n", i);
  
  f(&i); 
    
    printf ("The value of i after call %d \n", i);
}

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Pass reference of an int value into function : Function Parameters « Function « C / ANSI-C

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