Compilare: user.cpp: In function ‘int main()’: user.cpp:107:11: warning: unused variable ‘fout’ [-Wunused-variable] FILE *fout=fopen("ambuscada.out", "w"); ^ user.cpp:108:24: warning: unused variable ‘x’ [-Wunused-variable] int n, k, m, p, i, x, tp,st, dr, mij; ^ user.cpp:108:27: warning: unused variable ‘tp’ [-Wunused-variable] int n, k, m, p, i, x, tp,st, dr, mij; ^ user.cpp:108:30: warning: unused variable ‘st’ [-Wunused-variable] int n, k, m, p, i, x, tp,st, dr, mij; ^ user.cpp:108:34: warning: unused variable ‘dr’ [-Wunused-variable] int n, k, m, p, i, x, tp,st, dr, mij; ^ user.cpp:108:38: warning: unused variable ‘mij’ [-Wunused-variable] int n, k, m, p, i, x, tp,st, dr, mij; ^ user.cpp: In function ‘char getChar(FILE*)’: user.cpp:79:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, BUF_SIZE, f); ^