1500字范文 > c语言中将整数转换成字符串_在C语言中将ASCII字符串（char []）转换为十六进制字符串

c语言中将整数转换成字符串_在C语言中将ASCII字符串（char []）转换为十六进制字符串

时间：2022-10-05 00:09:34

c语言中将整数转换成字符串

Given an ASCII string (char[]) and we have to convert it into Hexadecimal string (char[]) in C.

给定一个ASCII字符串(char [])，我们必须在C中将其转换为十六进制字符串(char [])。

Logic:

逻辑：

To convert an ASCII string to hex string, follow below-mentioned steps:

要将ASCII字符串转换为十六进制字符串，请执行以下步骤：

Extract characters from the input string and convert the character in hexadecimal format using %02X format specifier, %02X gives 0 padded two bytes hexadecimal value of any value (like int, char).

从输入字符串中提取字符，并使用％02X格式说明符将其转换为十六进制格式，％02X为0填充两个字节的任意值的十六进制值(如int ， char )。

Add these two bytes (characters) which is a hex value of an ASCII character to the output string.

将这两个字节(字符)添加为输出字符串，这两个字节是ASCII字符的十六进制值。

After each iteration increase the input string's loop counter (loop) by 1 and output string's loop counter (i) by 2.

每次迭代后，将输入字符串的循环计数器( loop )增大1，将输出字符串的循环计数器( i )增大2。

At the end of the loop, insert a NULL character to the output string.

在循环末尾，在输出字符串中插入一个NULL字符。

Example:

例：

Input: "Hello world!"Output: "48656C6C6F20776F726C6421"

C程序将ASCII char []转换为十六进制char [] (C program to convert ASCII char[] to hexadecimal char[])

In this example, ascii_str is an input string that contains"Hello world!", we are converting it to a hexadecimal string. Here, we created a function void string2hexString(char* input, char* output),to convert ASCII string to hex string, the final output string is storing in hex_str variable.

在此示例中， ascii_str是包含“ Hello world！”的输入字符串。，我们将其转换为十六进制字符串。在这里，我们创建了一个函数void string2hexString(char * input，char * output) ，将ASCII字符串转换为十六进制字符串，最终的输出字符串存储在hex_str变量中。

#include <stdio.h>#include <string.h>//function to convert ascii char[] to hex-string (char[])void string2hexString(char* input, char* output){int loop;int i; i=0;loop=0;while(input[loop] != '\0'){sprintf((char*)(output+i),"%02X", input[loop]);loop+=1;i+=2;}//insert NULL at the end of the output stringoutput[i++] = '\0';}int main(){char ascii_str[] = "Hello world!";//declare output string with double size of input string//because each character of input string will be converted//in 2 bytesint len = strlen(ascii_str);char hex_str[(len*2)+1];//converting ascii string to hex stringstring2hexString(ascii_str, hex_str);printf("ascii_str: %s\n", ascii_str);printf("hex_str: %s\n", hex_str);return 0;}

Output

输出量

ascii_str: Hello world!hex_str: 48656C6C6F20776F726C6421