Run id: 66438

Main.cc:7:11: warning: character constant too long for its type
     scanf('%3d%1d',&a,&b);
           ^
Main.cc:8:12: warning: multi-character character constant [-Wmultichar]
     printf('%d%d',b,a);
            ^
Main.cc: In function 'int main()':
Main.cc:7:25: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
     scanf('%3d%1d',&a,&b);
                         ^
In file included from /usr/include/c++/5/cstdio:42:0,
                 from /usr/include/c++/5/ext/string_conversions.h:43,
                 from /usr/include/c++/5/bits/basic_string.h:5249,
                 from /usr/include/c++/5/string:52,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from Main.cc:1:
/usr/include/stdio.h:431:12: note:   initializing argument 1 of 'int scanf(const char*, ...)'
 extern int scanf (const char *__restrict __format, ...) __wur;
            ^
Main.cc:8:22: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
     printf('%d%d',b,a);
                      ^
In file included from /usr/include/stdio.h:936:0,
                 from /usr/include/c++/5/cstdio:42,
                 from /usr/include/c++/5/ext/string_conversions.h:43,
                 from /usr/include/c++/5/bits/basic_string.h:5249,
                 from /usr/include/c++/5/string:52,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from Main.cc:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:102:1: note:   initializing argument 1 of 'int printf(const char*, ...)'
 printf (const char *__restrict __fmt, ...)
 ^
Main.cc:7:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf('%3d%1d',&a,&b);
                          ^