Compilare: main.cpp: In function 'int main()': main.cpp:11:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d %d",&n,&m); ^ main.cpp:14:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&nr); ^ main.cpp:43:41: warning: 'col' may be used uninitialized in this function [-Wmaybe-uninitialized] if (s==mini && j==c && i<col) ~~~~~~~~~~~~~~~~^~~~~~~~ main.cpp:38:33: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] if (s==mini && j<c){ ~^~