string.cpp: In function `void coboara(int)': string.cpp:36: warning: `int poz' might be used uninitialized in this function string.cpp: In function `void df(int)': string.cpp:60: warning: comparison between signed and unsigned integer expressions string.cpp: In function `int main()': string.cpp:119: warning: comparison between signed and unsigned integer expressions string.cpp:69: warning: unused variable `int j'