/in/foo.c: In function 'main':
/in/foo.c:9:19: warning: format '%d' expects a matching 'int' argument [-Wformat=]
    printf("%d %d %d",b,a);
                   ^
/in/foo.c:12:20: warning: format '%d' expects a matching 'int' argument [-Wformat=]
     printf("%d %d %d",c,a);
                    ^
/in/foo.c:14:20: warning: format '%d' expects a matching 'int' argument [-Wformat=]
     printf("%d %d %d",a,c);
                    ^
/in/foo.c:17:19: warning: format '%d' expects a matching 'int' argument [-Wformat=]
    printf("%d %d %d",c,b);
                   ^
/in/foo.c:20:20: warning: format '%d' expects a matching 'int' argument [-Wformat=]
     printf("%d %d %d",c,b);
                    ^
/in/foo.c:22:20: warning: format '%d' expects a matching 'int' argument [-Wformat=]
     printf("%d %d %d",b,c);
                    ^