Compilare: user.c: In function ‘prima’: user.c:22:9: warning: implicit declaration of function ‘doua’ [-Wimplicit-function-declaration] if(doua()==0) ^ user.c: In function ‘main’: user.c:56:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.c:58:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&l); ^ user.c:62:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[j]); ^ user.c:91:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[0]); ^