Compilare: user.cpp: In function ‘int matPow(int)’: user.cpp:37:13: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(k&1 == 1) ^ user.cpp:31:15: warning: unused variable ‘q’ [-Wunused-variable] int i, j, q; ^ user.cpp: In function ‘int main()’: user.cpp:60:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &t, &n, &k); ^