Compilare: main.cpp: In function 'int main()': main.cpp:17:13: warning: unused variable 'curr' [-Wunused-variable] int n,m,curr=0,i,j,ic,jc,iv,jv,d; ^~~~ main.cpp:18:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d\n",&n,&m); ^ main.cpp:20:32: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets (a[i]+1,DIMN,fin); ^