Compilare: user.cpp: In function ‘int main()’: user.cpp:21:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma4.in","r",stdin); ^ user.cpp:22:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma4.out","w",stdout); ^ user.cpp:24:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:33:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&pir[t][j][k]); ^ user.cpp:49:90: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] mini=min(pir[i+1][j][k],min(pir[i+1][j+1][k],min(pir[i+1][j][k+1],pir[i+1][j+1][k+1]))); ^ user.cpp:49:80: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] mini=min(pir[i+1][j][k],min(pir[i+1][j+1][k],min(pir[i+1][j][k+1],pir[i+1][j+1][k+1]))); ^