Compilare: main.cpp: In function 'int main()': main.cpp:13:22: warning: unused variable 'p' [-Wunused-variable] int n, gtot, i, j, p, g, a, xi, yi, xf, yf, k1, k2; ^ main.cpp:13:25: warning: unused variable 'g' [-Wunused-variable] int n, gtot, i, j, p, g, a, xi, yi, xf, yf, k1, k2; ^ main.cpp:15:52: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d", &n, &xi, &yi, &xf, &yf); ^ main.cpp:20:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a); ^ main.cpp:28:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^