Compilare: user.cpp: In function ‘int main()’: user.cpp:77:37: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(ok=bellmanford(i,mij)) ^ user.cpp: In function ‘void citire()’: user.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:18:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lf",&aux1,&aux2,&aux3); ^ user.cpp: In function ‘int main()’: user.cpp:65:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.in","r",stdin); ^ user.cpp:66:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.out","w",stdout); ^ user.cpp:80:9: warning: ‘ok’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(ok) st=mij; ^