// some code fragments for practice
// wdg - 2008
#include <stdio.h>

int main(void) {

  char myChar = 'a';
  if( myChar>='0' && myChar<='9') {
    printf("%c is digit\n", myChar);
  }

  float grade=147.3;
  if(grade<0 || grade>100)
    printf("%.2f is wrong\n", grade);

  return 0;
}