exponent.cpp:4: warning: ISO C++ forbids declaration of `main' with no type exponent.cpp: In function `int main()': exponent.cpp:14: warning: int format, different type arg (arg 2) exponent.cpp:14: warning: int format, different type arg (arg 3) exponent.cpp:17: warning: int format, different type arg (arg 2) exponent.cpp:56: warning: int format, different type arg (arg 2) exponent.cpp:57:2: warning: no newline at end of file