zona.cpp:3: redefinition of `int nrp' zona.cpp:3: `int nrp' previously declared here zona.cpp: In function `int main()': zona.cpp:21: `kk' undeclared (first use this function) zona.cpp:21: (Each undeclared identifier is reported only once for each function it appears in.) zona.cpp:24: `mat' undeclared (first use this function) zona.cpp:33: `j' undeclared (first use this function) zona.cpp:36: parse error before `{' token zona.cpp: At global scope: zona.cpp:40: ISO C++ forbids declaration of `printf' with no type zona.cpp:40: `int printf' redeclared as different kind of symbol /usr/include/stdio.h:300: previous declaration of `int printf(const char*, ...) ' zona.cpp:40: initializer list being treated as compound expression zona.cpp:41: parse error before `return'