char a =“0”； printf("c% "，a)； Output 0 as characters.

char a[20]= " 0 123456789 "； printf("s% "，a)； Output 0 123456789 as a string.

Defy a =1.0; printf("f% "，a)； Output 1.000000 as a floating point.

int a = 10； printf("o% "，a)； Octal plastic output 12.

int a = 10； printf("x% "，a)； Hexadecimal shaping output a

int a =- 1； printf("u% "，a)； Shaped output unsigned number 65536.

int a = 120； printf("e% "，a)； Output 1.2e+02 by scientific notation.

int a = 120； printf("g% "，a)； Use a shorter output width of %f or %e, instead of outputting meaningless 0, output 120.

In addition, the following additional symbols can be inserted between% and the above format characters.

L is used for long integers and is added before d, o, x and u.

-The output number or character is left in the field.

The minimum width of n (positive integer) data, indicating that the real number outputs n decimal places, and the character string intercepts the number of characters.

Such as: long int a = 0；; printf("ld% "，a)； Long shaping output 0.