Compilare: user.cpp: In function ‘int main()’: user.cpp:20:38: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘char*’ [-Wformat=] fscanf(fi, "%d", &a[i][j]); ^ user.cpp:17:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &n, &m); ^ user.cpp:20:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &a[i][j]); ^ user.cpp:43:49: warning: ‘col1’ may be used uninitialized in this function [-Wmaybe-uninitialized] dist[i][j]=min2+a[i][j]+a[i-1][j]; ^