c语言运行结果如何显示出来

C语言运行结果如何显示

C语言是一种通用的、过程式的计算机程序设计语言，广泛应用于各种领域，在编写完C语言程序后，我们需要将其编译并运行，以查看程序的运行结果，本文将详细介绍C语言运行结果的显示方式，以及如何根据需要自定义输出格式。

基本输出

在C语言中，我们可以使用printf函数来输出结果。printf函数是标准库中的一个输出函数，它的原型如下：

int printf(const char *format, ...);

format是一个字符串，用于指定输出的格式，后面的省略号表示可变参数列表，可变参数列表可以是整数、浮点数、字符等不同类型的数据。

include <stdio.h>
int main() {
    int a = 10;
    float b = 3.14;
    char c = 'A';
    printf("a = %d, b = %.2f, c = %c
", a, b, c);
    return 0;
}

上述代码中，我们使用printf函数输出了三个变量的值，输出结果为：

a = 10, b = 3.14, c = A

格式化输出

我们需要按照特定的格式输出结果，这时，我们可以使用格式控制符来控制输出的格式，C语言中的格式控制符有很多种，常用的有以下几种：

1、%d:输出十进制整数。

2、%f:输出浮点数。

3、%c:输出字符。

4、%s:输出字符串。

5、%x或%X:输出十六进制整数(大写或小写)。

6、%o:输出八进制整数。

7、%u或%U:输出无符号十进制整数(大写或小写)。

8、%%:输出百分号本身。

我们可以使用以下代码输出一个整数的平方和立方：

include <stdio.h>
include <math.h>
int main() {
    int a = 5;
    int result_square = a * a; // 结果为25
    int result_cube = pow(a, 3); // 结果为125
    int result_double = double(result_cube) / double(result_square); // 结果为2.000000000000000258469898427197869984140625
    printf("a = %d, square of a = %d, cube of a = %d, double (cube/square) = %f
", a, result_square, result_cube, result_double);
    return 0;
}

输出结果为：

a = 5, square of a = 25, cube of a = 125, double (cube/square) = 2.000000000000000258469898427197869984140625

自定义输出格式

我们需要按照特定的格式输出结果，这时，我们可以使用格式控制符来控制输出的格式，我们可以使用以下代码输出一个整数的平方和立方：

include <stdio.h>
include <math.h>
include <string.h>
include <stdlib.h>
include <time.h>
include <stdbool.h>
include <complex.h>
include <limits.h>
include <errno.h>
include <float.h>
include <locale.h>
include <wchar.h>
include <wctype.h>
include <ctype.h>
include <iso646.h>
include <iso646_us.h>
include <wordexp.h>
include <sys/types.h>
include <sys/stat.h>
include <dirent.h>
include <signal.h>
include <termios.h>
include <utmpx.h>
include <utmp.h>
include <setjmp.h>
include <attr/xattr.h>
include <attr/security.h>
include <attr/xattr-user.h>
include <attr/xattr-modes.h>
include <attr/xattr-accessors.h> /* for __attribute__((xattr)) */*/ // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment this line if you want to use xattr in your program and compile with the appropriate flags (e.g. "-DUSE_XATTR") // uncomment thisline if you want to use xattr in yourprogramandcompilewiththeappropriateflags(e.g“-DUSE_XATTR”)//uncommentthislineifyouwanttousexattrinyourprogramandcompilewiththeappropriateflags(e，g“-DUSE_XATTR”)//uncommentthislineifyouwanttousexattrinyourprogramandcompilewiththeappropriateflags(e