Compilare: main.cpp: In function 'int main()': main.cpp:28:51: warning: unused variable 'z' [-Wunused-variable] int p,max,i,j,ci,cj,d1,tot,i1,i2,c2,c3,d2,cul,z,k; ^ main.cpp:26:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.in","r",stdin); ^ main.cpp:27:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.out","w",stdout); ^ main.cpp:29:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d ",&p,&n,&n2); ^ main.cpp:33:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c ",&m[i][j]); ^