Compilare: main.cpp: In function 'int main()': main.cpp:17:18: warning: array subscript has type 'char' [-Wchar-subscripts] in >> a[i]; ^ main.cpp:23:26: warning: array subscript has type 'char' [-Wchar-subscripts] if(strlen(a[i]) > strlen(max)) ^ main.cpp:24:32: warning: array subscript has type 'char' [-Wchar-subscripts] strcpy(max, a[i]); ^ main.cpp:25:31: warning: array subscript has type 'char' [-Wchar-subscripts] else if(strlen(a[i]) == strlen(max)) ^ main.cpp:26:38: warning: array subscript has type 'char' [-Wchar-subscripts] for(j=0; j<strlen(a[i]); j++) ^ main.cpp:26:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<strlen(a[i]); j++) ~^~~~~~~~~~~~~ main.cpp:27:34: warning: array subscript has type 'char' [-Wchar-subscripts] if(max[j]>a[i][j]) ^ main.cpp:29:40: warning: array subscript has type 'char' [-Wchar-subscripts] strcpy(max, a[i]); ^ main.cpp:45:38: warning: array subscript has type 'char' [-Wchar-subscripts] for(k=0; k<strlen(a[i]); k++) ^ main.cpp:45:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0; k<strlen(a[i]); k++) ~^~~~~~~~~~~~~ main.cpp:46:40: warning: array subscript has type 'char' [-Wchar-subscripts] if(strchr(a[j], a[i][k])) ^ main.cpp:46:43: warning: array subscript has type 'char' [-Wchar-subscripts] if(strchr(a[j], a[i][k])) ^ main.cpp:48:38: warning: array subscript has type 'char' [-Wchar-subscripts] if(contor==strlen(a[i])) ^ main.cpp:48:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(contor==strlen(a[i])) ~~~~~~^~~~~~~~~~~~~~ main.cpp:56:40: warning: array subscript has type 'char' [-Wchar-subscripts] for(j=i+1; j<strlen(a[i]); j++) ^ main.cpp:56:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i+1; j<strlen(a[i]); j++) ~^~~~~~~~~~~~~ main.cpp:59:42: warning: array subscript has type 'char' [-Wchar-subscripts]