Compilare: user.cpp: In function ‘int back(int, int)’: user.cpp:20:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[k]=s[k-1]+p[n-k+1][e[pl].v]; ^ user.cpp:23:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[e[pl].lin][e[pl].col]=0; ^ user.cpp:23:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[e[pl].lin][e[pl].col]=0; ^ user.cpp:27:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] { l=e[vec[pl][r]].lin; ^ user.cpp:28:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] c=e[vec[pl][r]].col; ^ user.cpp:35:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[e[pl].lin][e[pl].col]=x[k]; ^ user.cpp:35:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[e[pl].lin][e[pl].col]=x[k]; ^ user.cpp: In function ‘int main()’: user.cpp:46:28: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] { scanf("%d",&v[i][j]); ^ user.cpp:50:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(t=1;t<=n;t++) poz[e[t].lin][e[t].col]=t; ^ user.cpp:50:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(t=1;t<=n;t++) poz[e[t].lin][e[t].col]=t; ^ user.cpp:59:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(e[vec[t][i]].v<e[vec[t][i+1]].v) {swap(vec[t][i],vec[t][i+1]); w=1;} ^ user.cpp:59:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(e[vec[t][i]].v<e[vec[t][i+1]].v) {swap(vec[t][i],vec[t][i+1]); w=1;} ^ user.cpp:65:24: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%ld\n",smin); ^ user.cpp:43:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma3.in","r",stdin); freopen("suma3.out","w",stdout); ^ user.cpp:43:67: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma3.in","r",stdin); freopen("suma3.out","w",stdout); ^ user.cpp:44:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&a,&b); ^