balls.cpp: In function `void simplific(char*, int, int)': balls.cpp:41: warning: unused variable `int j' balls.cpp:41: warning: `int i1' might be used uninitialized in this function balls.cpp:41: warning: `int j1' might be used uninitialized in this function balls.cpp: In function `int exista(int, int)': balls.cpp:100: warning: comparison between signed and unsigned integer expressions /tmp/cc3M7OZG.o(.text+0x3b2): In function `main': : the `gets' function is dangerous and should not be used.