foo.cpp: In function 'int main()':
foo.cpp:5:13: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
     printf(a+b);
             ^
In file included from foo.cpp:1:0:
C:/TDM-GCC-32/include/stdio.h:252:5: note: initializing argument 1 of 'int printf(const char*, ...)'
 int printf (const char *__format, ...)
     ^