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#include <stdio.h>
#include <math.h>
int a,c,d,k,m,p;
void main()
{scanf('%d,%d,%d,%d',&c,&d,&k,&m);
a=(c+d)*(2k-m);
p==a%5;
if(f=0)
{a==a/5;
printf('%d',a);}
if(f/2=0)
{printf('chetnoe');}
else 
{printf('nechetnoe');}
}
 
 

prog.c:4:6: warning: return type of ‘main’ is not ‘int’ [-Wmain]
 void main()
      ^~~~
prog.c: In function ‘main’:
prog.c:5:8: warning: character constant too long for its type
 {scanf('%d,%d,%d,%d',&c,&d,&k,&m);
        ^~~~~~~~~~~~~
prog.c:5:8: warning: passing argument 1 of ‘scanf’ makes pointer from integer without a cast [-Wint-conversion]
In file included from /usr/include/features.h:364:0,
                 from /usr/include/stdio.h:27,
                 from prog.c:1:
/usr/include/stdio.h:448:12: note: expected ‘const char * restrict’ but argument is of type ‘int’
 extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
            ^
prog.c:6:10: error: fixed-point types not supported for this target
 a=(c+d)*(2k-m);
          ^~
prog.c:7:2: warning: statement with no effect [-Wunused-value]
 p==a%5;
 ~^~~~~
prog.c:8:4: error: ‘f’ undeclared (first use in this function)
 if(f=0)
    ^
prog.c:8:4: note: each undeclared identifier is reported only once for each function it appears in
prog.c:9:3: warning: statement with no effect [-Wunused-value]
 {a==a/5;
  ~^~~~~
prog.c:10:8: warning: multi-character character constant [-Wmultichar]
 printf('%d',a);}
        ^~~~
prog.c:10:8: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [-Wint-conversion]
In file included from prog.c:1:0:
/usr/include/stdio.h:364:12: note: expected ‘const char * restrict’ but argument is of type ‘int’
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~
prog.c:12:9: warning: character constant too long for its type
 {printf('chetnoe');}
         ^~~~~~~~~
prog.c:12:9: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [-Wint-conversion]
In file included from prog.c:1:0:
/usr/include/stdio.h:364:12: note: expected ‘const char * restrict’ but argument is of type ‘int’
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~
prog.c:14:9: warning: character constant too long for its type
 {printf('nechetnoe');}
         ^~~~~~~~~~~
prog.c:14:9: warning: passing argument 1 of ‘printf’ makes pointer from integer without a cast [-Wint-conversion]
In file included from prog.c:1:0:
/usr/include/stdio.h:364:12: note: expected ‘const char * restrict’ but argument is of type ‘int’
 extern int printf (const char *__restrict __format, ...);
            ^~~~~~

Standard output is empty