sizeof(type)

#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
  int a,b;
  scanf( "%d %d", &a, &b );

  printf( "MAX -> %d \n" , (a>b?a:b) );

  printf( "sizeof(a)=%d, sizeof(int) =%d, sizeof(float)=%d \n  sizeof(double)=%d \n" ,\
   sizeof(a),sizeof(int), sizeof(float), sizeof(double) );
  //印出a的大小 印出int大小
  //程式碼太長換行加\
  system( "PAUSE" );
  return 0;
}