/in/foo.c: In function 'main':
/in/foo.c:4:13: error: stray '\357' in program
 printf(a=100，b=200，c=300);
             ^
/in/foo.c:4:14: error: stray '\274' in program
 printf(a=100，b=200，c=300);
              ^
/in/foo.c:4:15: error: stray '\214' in program
 printf(a=100，b=200，c=300);
               ^
/in/foo.c:4:16: error: expected ')' before 'b'
 printf(a=100，b=200，c=300);
                ^
/in/foo.c:4:21: error: stray '\357' in program
 printf(a=100，b=200，c=300);
                     ^
/in/foo.c:4:22: error: stray '\274' in program
 printf(a=100，b=200，c=300);
                      ^
/in/foo.c:4:23: error: stray '\214' in program
 printf(a=100，b=200，c=300);
                       ^
/in/foo.c:4:8: warning: passing argument 1 of 'printf' makes pointer from integer without a cast [-Wint-conversion]
 printf(a=100，b=200，c=300);
        ^
In file included from /in/foo.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, ...);
            ^~~~~~