Compilare: main.cpp: In function 'void backtracking(char, char, char, char, Point*, bool*, Move*)': main.cpp:52:50: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | solution[pos].from = v[i]; | ^~~ main.cpp:53:50: warning: array subscript has type 'char' [-Wchar-subscripts] 53 | solution[pos].to = {v[i].r + 2 * dr[dir], v[i].c + 2 * dc[dir]}; | ^~~ main.cpp:53:68: warning: narrowing conversion of '(((int)(v + ((sizetype)(((long unsigned int)i) * 2)))->Point::r) + (2 * ((int)dr[dir])))' from 'int' to 'char' [-Wnarrowing] 53 | solution[pos].to = {v[i].r + 2 * dr[dir], v[i].c + 2 * dc[dir]}; | ~~~~~~~^~~~~~~~~~~~~ main.cpp:53:90: warning: narrowing conversion of '(((int)(v + ((sizetype)(((long unsigned int)i) * 2)))->Point::c) + (2 * ((int)dc[dir])))' from 'int' to 'char' [-Wnarrowing] 53 | solution[pos].to = {v[i].r + 2 * dr[dir], v[i].c + 2 * dc[dir]}; | ~~~~~~~^~~~~~~~~~~~~ main.cpp:55:88: warning: array subscript has type 'char' [-Wchar-subscripts] 55 | m[v[i].r + dr[dir]][v[i].c + dc[dir]] = m[v[i].r][v[i].c] = 0; | ~~~~~^ main.cpp:55:96: warning: array subscript has type 'char' [-Wchar-subscripts] 55 | m[v[i].r + dr[dir]][v[i].c + dc[dir]] = m[v[i].r][v[i].c] = 0; | ~~~~~^ main.cpp:61:57: warning: array subscript has type 'char' [-Wchar-subscripts] 61 | v[i] = solution[pos].to; | ^~~ main.cpp:65:57: warning: array subscript has type 'char' [-Wchar-subscripts] 65 | v[i] = solution[pos].from; | ^~~ main.cpp:66:88: warning: array subscript has type 'char' [-Wchar-subscripts] 66 | m[v[i].r + dr[dir]][v[i].c + dc[dir]] = m[v[i].r][v[i].c] = 1; | ~~~~~^ main.cpp:66:96: warning: array subscript has type 'char' [-Wchar-subscripts] 66 | m[v[i].r + dr[dir]][v[i].c + dc[dir]] = m[v[i].r][v[i].c] = 1; | ~~~~~^ main.cpp: In function 'int main()': main.cpp:83:24: warning: array subscript has type 'char' [-Wchar-subscripts] 83 | m[v[i].r][v[i].c] = 1; | ~~~~~^ main.cpp:83:32: warning: array subscript has type 'char' [-Wchar-subscripts] 83 | m[v[i].r][v[i].c] = 1; | ~~~~~^