Compilare: main.cpp: In function 'int main()': main.cpp:16:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &N); ^ main.cpp:19:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^ main.cpp:58:25: warning: 'min_val' may be used uninitialized in this function [-Wmaybe-uninitialized] C[i][j+i-1] = min_val; ~~~~~~~~~~~~^~~~~~~~~