cod3.cpp: In function 'int main()': cod3.cpp:80: warning: unused variable 'a' cod3.cpp:85: warning: unused variable 'j' cod3.cpp:85: warning: unused variable 'k' cod3.cpp: In function 'void rdr(int)': cod3.cpp:15: warning: 'a' may be used uninitialized in this function cod3.cpp:15: warning: 'b' may be used uninitialized in this function cod3.cpp: In function 'void rst(int)': cod3.cpp:33: warning: 'a' may be used uninitialized in this function cod3.cpp:33: warning: 'b' may be used uninitialized in this function