Compilare: main.cpp: In function 'int main()': main.cpp:57:15: warning: unused variable 'j' [-Wunused-variable] int n,m,k,i,j,nr,x,y,z; ^ main.cpp:58:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&n,&m,&k); ^ main.cpp:60:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&nr); ^ main.cpp:64:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&x,&y,&z); ^