1 char a1[] = {'A', 'B', 'C'}; 2 char a2[] = "world"; 3 4 5 printf("[%.*s][%.*s] ", 2, a1, 10, a2); 6 printf("[%.*s][%.*s] ", sizeof(a1), a1, sizeof(a2), a2); 7 printf("[%-*d] ", 4, 'A'); //产生"65 " 8 printf("[%-*s] ", 4, "A"); //产生"A " 9 printf("[%#0*X] ", 8, 128); //产生"0X000080","#"产生0X 10 printf("[%*.*f] ", 10, 2, 3.1415926); //产生" 3.14"
左补0
printf("[%0*s] ", 4, "A"); //产生"000A"