Compilare: main.cpp: In function 'int main()': main.cpp:46:35: warning: unused variable 'k' [-Wunused-variable] int i,j,n,m,cer,solx,soly,c,d,k; ^ main.cpp:48:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&cer,&n,&m); ^ main.cpp:50:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"\n"); ^ main.cpp:52:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&a[i][j]); ^ main.cpp:104:16: warning: 'cul' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout,"%d %d\n%c\n",solx,soly,cul); ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~