Compilare: main.cpp: In function 'int main()': main.cpp:10:65: warning: variable 'ok' set but not used [-Wunused-but-set-variable] int m,n,i,j,nraf,nreaf,x1,y1,x2,y2,nr0,nr1,ii,jj,nre,vf,aux,ok=1,p=0; ^~ main.cpp:8:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elicop.in","r",stdin); ^ main.cpp:9:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elicop.out","w",stdout); ^ main.cpp:11:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&m,&n); ^ main.cpp:14:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^ main.cpp:15:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nre); ^ main.cpp:20:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d",&x1,&y1,&x2,&y2,&vf); ^