Compilare: user.cpp: In function ‘int main()’: user.cpp:31:9: warning: unused variable ‘i’ [-Wunused-variable] int i, nr=0, cx, cy, mmin; ^ user.cpp: In function ‘void afisare()’: user.cpp:160:31: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(fout, "%d\n", cost); ^ user.cpp: In function ‘void citire()’: user.cpp:55:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d\n", &n, &m); ^ user.cpp:58:61: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d\n", &G[i].x, &G[i].y, &G[i].c); ^