Compilare: user.cpp: In function ‘void compMat(int)’: user.cpp:38:9: warning: unused variable ‘x’ [-Wunused-variable] int x = 1, y = 1; ^ user.cpp: In function ‘int main()’: user.cpp:65:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:69:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &c); ^