Compilare: main.cpp: In function 'int main()': main.cpp:42:26: warning: unused variable 'nr' [-Wunused-variable] int n,i,culmax,j,cul,nr; ^~ main.cpp:43:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:53:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&a[i][j]); ^