Compilare: user.cpp: In function ‘int lee(int (*)[101], int, int, int, int)’: user.cpp:13:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j, s, d; ^ user.cpp:13:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, s, d; ^ user.cpp: In function ‘int main()’: user.cpp:57:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%*c",&n,&m); ^ user.cpp:60:20: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(x,m+5,in); ^ user.cpp:84:31: warning: ‘s2’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee( mat_r, n, m, s1, s2 ); ^ user.cpp:84:31: warning: ‘s1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:85:31: warning: ‘k2’ may be used uninitialized in this function [-Wmaybe-uninitialized] lee( mat_j, n, m, k1, k2 ); ^ user.cpp:85:31: warning: ‘k1’ may be used uninitialized in this function [-Wmaybe-uninitialized]