Compilare: main.cpp: In function 'int main()': main.cpp:63:15: warning: unused variable 'j' [-Wunused-variable] int n, i, j, c, cc, l, ll, contor, v1, v2 ; ^ main.cpp:63:18: warning: unused variable 'c' [-Wunused-variable] int n, i, j, c, cc, l, ll, contor, v1, v2 ; ^ main.cpp:63:21: warning: unused variable 'cc' [-Wunused-variable] int n, i, j, c, cc, l, ll, contor, v1, v2 ; ^~ main.cpp:63:25: warning: unused variable 'l' [-Wunused-variable] int n, i, j, c, cc, l, ll, contor, v1, v2 ; ^ main.cpp:63:28: warning: unused variable 'll' [-Wunused-variable] int n, i, j, c, cc, l, ll, contor, v1, v2 ; ^~ main.cpp:64:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n ) ; ^ main.cpp:66:49: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &v[i].x, &v[i].y ) ; ^