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#include <stdio.h>
int character_game(char correct_answer, int max_guesses){
 
  char guessed_char;
  int correct_case = 0;
  int guessed_case = 0;
  int guessed_char_interval1, guessed_char_interval2;
 
  do {
     printf("letter?\n");
     scanf(" %c", &guessed_char);
 
                                            printf("guessed_char is: %d\n", guessed_char);
                                            printf("correct_answer is: %d\n", correct_answer);
                                            printf("guessed character is lower character? 0:no. Else:Yes. (%d)\n", islower(guessed_char));
 
                                            printf("guessed letter is %c\n", guessed_char);
     if (guessed_char < correct_answer){
        printf("too low\n");
     }
 
     else if (guessed_char > correct_answer){
        printf("too high\n");
     }
     else if (guessed_char == correct_answer){
        if (islower(guessed_char)){
           guessed_case = 1;
        }
        if ( islower(correct_answer)){
           correct_case = 1;
        }
        if (guessed_case == correct_case){
           return 1;
        }
        else{
           printf("wrong case\n");
        }
 
     }
 
     max_guesses--;
     printf("max_guesses now: %d\n", max_guesses);
  }while (max_guesses > 0);
//}  ----> Missing
 
int main(void) {
	return 0;
}
 

prog.c: In function ‘character_game’:
prog.c:15:45: warning: implicit declaration of function ‘islower’ [-Wimplicit-function-declaration]
                                             printf("guessed character is lower character? 0:no. Else:Yes. (%d)\n", islower(guessed_char));
                                             ^
prog.c:46:5: warning: ‘main’ is normally a non-static function [-Wmain]
 int main(void) {
     ^
prog.c:48:1: error: expected declaration or statement at end of input
 }
 ^
prog.c:7:31: warning: unused variable ‘guessed_char_interval2’ [-Wunused-variable]
   int guessed_char_interval1, guessed_char_interval2;
                               ^
prog.c:7:7: warning: unused variable ‘guessed_char_interval1’ [-Wunused-variable]
   int guessed_char_interval1, guessed_char_interval2;
       ^
prog.c:48:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Standard output is empty