ch4_4.c

C语言程序设计 冶金工业出版社 刘怀亮

/*ch4_4*/
/*数据格式输入与输出的综合例子*/
#include<stdio.h>
#include<string.h>
main()
{ 
    char c, s[20], *p;
    int a=1234;
    float f=3.141592653589;
    double x=0.12345678912345678;
    p="Nice to meet you"; 
    strcpy(s, "Hello, Computer"); 
    c='\x41'; 
    printf("a=%d\n", a);       		/*结果输出十进制整数a=1234*/ 
    printf("a=%6d\n", a);     		/*结果输出6位十进制数a=  1234*/ 
    printf("a=%06d\n", a);    		/*结果输出6位十进制数a=001234*/ 
    printf("a=%2d\n", a);       		/*a超过2位, 按实际值输出a=1234*/ 
    printf("f=%f\n", f);        		/*输出浮点数f=3.141593*/ 
    printf("f=6.4f\n", f);      		/*输出6位其中小数点后4位的浮点数f=3.1416*/ 
    printf("x=%lf\n", x);       		/*输出长浮点数x=0.123457*/ 
    printf("x=%18.16lf\n", x); 		/*输出18位其中小数点后16位的长浮点数*/
    /*x=0.1234567891234567*/ 
    printf("c=%c\n", c);        		/*输出字符c=A*/ 
    printf("c=%x\n", c);        		/*输出字符的ASCII码值c=41*/ 
    printf("s[]=%s\n", s);      		/*输出数组字符串s[]=Hello, Computer */ 
    printf("s[]=%6.9s\n", s);  		/*输出最多9个字符的字符串s[]=Hello, Co*/ 
    printf("s=%p\n", s);        		/*输出数组字符串首字符地址s=FFBE*/ 
    printf("*p=%s\n", p);      		/*输出指针字符串p= Nice to meet you */ 
    printf("p=%p\n", p);       		/*输出指针的值p=0194*/ 
}