Compilare: user.c: In function ‘add’: user.c:30:9: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘struct hi’ [-Wformat=] printf("%d ",heap[i]); ^ user.c:11:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.c: In function ‘del’: user.c:75:9: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘struct hi’ [-Wformat=] printf("%d ",heap[i]); ^ user.c: In function ‘main’: user.c:90:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.c:93:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^ user.c:96:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&y); ^ user.c:100:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&y); ^