Compilare: main.cpp: In function 'int main()': main.cpp:17:26: warning: unused variable 'st' [-Wunused-variable] int p,n,m,i,j,nr,con,st,k,maxx=0,cont; ^~ main.cpp:18:10: warning: unused variable 'c' [-Wunused-variable] char c; ^ main.cpp:15:35: 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:16:37: 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:19:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&p,&n,&m); ^ main.cpp:22:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%1c",&v[i][0]); ^ main.cpp:25:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%1c",&v[i][j]); ^ main.cpp:148:19: warning: 'charmaxx' may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d %d\n%c\n",lmaxx,cmaxx,charmaxx); ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~