/* Compile with
 * gcc -o Prog1 -ansi -pedantic -Wall Prog1.c
 */

#include <stdio.h>

int V = 3 ;

int F01(int V) {
  /* int V ;
   * !Previous declaration would be illegal!
   */
  printf("In F01 -- V is %d or %08x\n", V, V) ;
  V = 5 ;
  {
    int V = 6 ;
    printf("In F01 block -- V is %d or %08x\n", V, V) ;
  }
  printf("In F01 -- V is %d or %08x\n\n", V, V) ;
  if (V==0) {
    int a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t , u, V;
    puts("In the block with all the variables\n") ;
  }
  return 0 ;
}

int F02(int V)
{
  printf("In F02 -- V is %d or %08x\n\n", V, V) ;
  return 0 ;
}

/* old fashioned */
int F03(V)
  int V ;
{
  printf("In F03 -- V is %d or %08x\n\n", V, V) ;
  return 0 ;
}

/* more old fashioned */
int F04(V)
{
  printf("In F04 -- V is %d or %08x\n\n", V, V) ;
  return 0 ;
}

/* downright archaic -- gets a warning */
F05(V)
{
  printf("In F05 -- V is %d or %08x\n\n", V, V) ;
  return 0 ;
}

int main(int argc, char **argv) {
  int a ;
  printf("In main -- V is %d or %08x\n\n", V, V) ;
  F01(4) ;
  printf("In main -- V is %d or %08x\n\n", V, V) ;
  a = 7 ;
  F01(a) ;
  F03(8) ;
  F04(9) ;

  F02((int)9.1) ;
  F03((int)9.2) ;
  F04((int)9.3) ;
  /* You should not do this */
  F02(9.4) ;
  F03(9.5) ;
  F04(9.6) ;
  F02(9.7f) ;
  F03(9.8f) ;
  F04(9.9f) ;
  F02('9') ;
  F03('9') ;
  F04('9') ;
  return 0 ;
}