Compilare: main.c: In function 'val': main.c:23:8: warning: array subscript has type 'char' [-Wchar-subscripts] Val[c] = val; ^ main.c: In function 'main': main.c:101:18: warning: array subscript has type 'char' [-Wchar-subscripts] U[c] = V[c]; ^ main.c:101:25: warning: array subscript has type 'char' [-Wchar-subscripts] U[c] = V[c]; ^ main.c:179:18: warning: array subscript has type 'char' [-Wchar-subscripts] V[c] = U[c]; ^ main.c:179:25: warning: array subscript has type 'char' [-Wchar-subscripts] V[c] = U[c]; ^ main.c:193:21: warning: array subscript has type 'char' [-Wchar-subscripts] sum += V[c] * Val[c]; ^ main.c:193:30: warning: array subscript has type 'char' [-Wchar-subscripts] sum += V[c] * Val[c]; ^ main.c:31:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("spatiu.in", "r", stdin); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:33:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("spatiu.out", "w", stdout); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:63:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &t); ^~~~~~~~~~~~~~~ main.c:69:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%i%s", &n, S); ^~~~~~~~~~~~~~~~~~~~