Compilare: user.c: In function ‘main’: user.c:14:15: warning: unused variable ‘b’ [-Wunused-variable] char c;int a,b,cont=0; ^ user.c:14:13: warning: unused variable ‘a’ [-Wunused-variable] char c;int a,b,cont=0; ^ user.c:15:7: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:20:8: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:26:10: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:30:11: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:36:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:44:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:55:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:64:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:79:8: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:85:10: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:89:11: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:95:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:104:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:117:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&c,1,1,f);l[cont]=1;cont++; ^ user.c:126:13: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result]