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#include <stdio.h>
 
int main(void) {
	float mediaum,mediadois,mediatres,mediaquatro;
	printf("Digite a media da primeira unidade");
	scanf('%f',mediaum);
	printf();
	printf("Digite a media da segunda unidade");
	scanf('%f',mediadois);
	printf();
	printf("Digite a media da terceira unidade");
	scanf('%f',mediatres);
	printf();
	printf("Digite a media da quarta unidade");
	scanf('%f',mediaquatro);
	printf();
 
	int quantbimestres = 4;
 
	float mediafinal = (mediaum + mediadois + mediatres + mediaquatro)/quantbimestres;
	printf('%f',mediafinal);
 
 
	return 0;
}
 

prog.c: In function 'main':
prog.c:6:8: warning: multi-character character constant [-Wmultichar]
  scanf('%f',mediaum);
        ^
prog.c:6:8: warning: passing argument 1 of 'scanf' makes pointer from integer without a cast
In file included from /usr/include/features.h:374:0,
                 from /usr/include/stdio.h:27,
                 from prog.c:1:
/usr/include/stdio.h:446:12: note: expected 'const char * __restrict__' but argument is of type 'int'
 extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
            ^
prog.c:7:2: error: too few arguments to function 'printf'
  printf();
  ^
prog.c:9:8: warning: multi-character character constant [-Wmultichar]
  scanf('%f',mediadois);
        ^
prog.c:9:8: warning: passing argument 1 of 'scanf' makes pointer from integer without a cast
In file included from /usr/include/features.h:374:0,
                 from /usr/include/stdio.h:27,
                 from prog.c:1:
/usr/include/stdio.h:446:12: note: expected 'const char * __restrict__' but argument is of type 'int'
 extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
            ^
prog.c:10:2: error: too few arguments to function 'printf'
  printf();
  ^
prog.c:12:8: warning: multi-character character constant [-Wmultichar]
  scanf('%f',mediatres);
        ^
prog.c:12:8: warning: passing argument 1 of 'scanf' makes pointer from integer without a cast
In file included from /usr/include/features.h:374:0,
                 from /usr/include/stdio.h:27,
                 from prog.c:1:
/usr/include/stdio.h:446:12: note: expected 'const char * __restrict__' but argument is of type 'int'
 extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
            ^
prog.c:13:2: error: too few arguments to function 'printf'
  printf();
  ^
prog.c:15:8: warning: multi-character character constant [-Wmultichar]
  scanf('%f',mediaquatro);
        ^
prog.c:15:8: warning: passing argument 1 of 'scanf' makes pointer from integer without a cast
In file included from /usr/include/features.h:374:0,
                 from /usr/include/stdio.h:27,
                 from prog.c:1:
/usr/include/stdio.h:446:12: note: expected 'const char * __restrict__' but argument is of type 'int'
 extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
            ^
prog.c:16:2: error: too few arguments to function 'printf'
  printf();
  ^
prog.c:21:9: warning: multi-character character constant [-Wmultichar]
  printf('%f',mediafinal);
         ^
prog.c:21:9: warning: passing argument 1 of 'printf' makes pointer from integer without a cast
In file included from prog.c:1:0:
/usr/include/stdio.h:362:12: note: expected 'const char * __restrict__' but argument is of type 'int'
 extern int printf (const char *__restrict __format, ...);
            ^

Standard output is empty