printf("%7.3f",100/3.0);表示结果占七位，小数部分占3位，这样就可以了，并且小数点后第三位是四舍五入的结果。例如：C语言中浮点数输出精确到两位小数的语句如下：double a=2.0;printf ("%.2f", a);//其中.2指明两位小数 说明：如%9.2f 表示输出场宽为9的浮点数, 其中小数位为2, ...
intscanf(constchar*format,...); 示例: #include<stdio.h>intmain(){intnumber;floatprice;charch;charstr[50];printf("Enter an integer: ");scanf("%d",&number);printf("Enter a floating-point number: ");scanf("%f",&price);printf("Enter a character: ");scanf(" %c",&ch);// 注意前...
14.12 Turbo C 的程序崩溃, 显示错误为 “floating point formats not linked” (浮点格式未连接)。 目录15 15.1 为什么调用 printf() 前, 必须要用 #include <stdio.h>? 15.2 为什么 %f 可以在 printf() 参数中, 同时表示 float 和 double?他们难道不是不同类型吗? 15.3 为什么当 n 为 long int, ...
When printing floating-point numbers, you can use format specifiers in functions like printf to display numbers in scientific notation:printf("%e\n", a); // Output in scientific notation printf("%f\n", b); // Output in fixed-point notation The %e format specifier will display the number ...
1、格式化输入输出函数:scanf,printf 1.1 printf()函数 man 3 printf 1. int printf(const char *format, …); format: “%[修饰符]格式字符” USAGE: printf(“%[修饰符]格式字符”, 输出表项); 标准输出格式字符 #include<stdio.h>intmain(void){charch=65;floatf=123.456;printf("%d, %c\n",ch...
*pFloat =9.0;printf("num的值为:%d\n",n);printf("*pFloat的值为:%f\n",*pFloat);return0; } 那么运行结果是什么呢? 不急,我们先对代码进行一波分析。 第一步 我们创建了一个int型变量n并赋值为9 第二步 我们将一个float型的指针变量pfloat指向了n ...
All of printf()'s output is right-justified, unless you place a minus sign right after the % sign. For example, %-12.4f will display a floating point number with a minimum of 12 characters, 4 decimal places, and left justified. You may modify the %d, %i, %o, %u, and %x type spe...
The %a and %A format specifiers format a floating point number as a hexadecimal mantissa and binary exponent. In previous versions, the printf functions would incorrectly zero-pad strings. For example, printf("%07.0a\n", 1.0) would print 00x1p+0, where it should print 0x01p+0. This fl...
and that are string format conversions. Take a look at the following example: #include<stdio.h> main() { printf(":%s:\n", "Hello, world!"); printf(":%15s:\n", "Hello, world!"); printf(":%.10s:\n", "Hello, world!"); ...
printf("Enter two integers and a floating point number:");scanf("%d %d %f", &num1, &num2, &fnum);printf("You entered: %d, %d, %f", num1, num2, fnum);printf("Enter a string:");scanf("%s", str);printf("You entered: %s", str);return 0;} 在这个示例中，我们使用scanf函数...