Compilare: main.cpp: In function 'void dijkstra()': main.cpp:9:15: warning: unused variable 'k' [-Wunused-variable] int i, j, k, m, pmin; ^ main.cpp: In function 'int main()': main.cpp:34:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("banuti.in", "r", stdin); ^ main.cpp:35:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("banuti.out", "w", stdout); ^ main.cpp:37:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:41:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x[i]); ^ main.cpp: In function 'void dijkstra()': main.cpp:21:19: warning: 'pmin' may be used uninitialized in this function [-Wmaybe-uninitialized] viz[pmin] = 1; ~~~~~~~~~~^~~