commit 6cbe0a7cb3fd6db86d814f16e41c0f412275c871 Author: 王柄盛 <3319473569@example.com> Date: Thu Oct 10 14:58:49 2024 +0800 l1 diff --git a/1.c b/1.c new file mode 100644 index 0000000..409691b --- /dev/null +++ b/1.c @@ -0,0 +1,82 @@ +#include +#include +#include + +// 函数:将单个字符转换为对应的数值 +int charToVal(char c) { + if (c >= '0' && c <= '9') return c - '0'; + else if (c >= 'A' && c <= 'F') return c - 'A' + 10; + else if (c >= 'a' && c <= 'f') return c - 'a' + 10; + else return -1; // 非法字符 +} + +// 函数:将数值转换为对应的字符 +char valToChar(int val) { + if (val >= 0 && val <= 9) return '0' + val; + else return 'A' + val - 10; +} + +// 函数:将字符串形式的数从fromBase进制转换为十进制 +int convertToDecimal(char *num, int fromBase) { + int len = strlen(num); + int power = 1; // 表示当前位的权重 + int numDecimal = 0; // 存放结果的十进制数 + + for (int i = len - 1; i >= 0; i--) { + int val = charToVal(num[i]); + if (val < 0 || val >= fromBase) { + printf("输入错误: 你所输入的数 %c 不是 %d进制\n", num[i], fromBase); + return -1; // 如果有非法字符,则返回 -1 + } + numDecimal += val * power; + power *= fromBase; // 计算权重 + } + + return numDecimal; +} + +// 函数:将十进制数转换为toBase进制的字符串形式 +void convertFromDecimal(int numDecimal, int toBase, char *result) { + int index = 0; // 指示result数组中的当前位置 + if (numDecimal == 0) { + result[index++] = '0'; // 特例处理零 + } + while (numDecimal > 0) { + int remainder = numDecimal % toBase; + result[index++] = valToChar(remainder); + numDecimal /= toBase; + } + result[index] = '\0'; // 添加字符串结束符 + + // 反转字符串 + for (int i = 0; i < index / 2; i++) { + char temp = result[i]; + result[i] = result[index - i - 1]; + result[index - i - 1] = temp; + } +} + +int main() { + char num[20]; + int fromBase, toBase; + char result[20]; + + printf("请输入数字: "); + scanf("%s", num); + printf("请输入当前数字的进制(2 to 16): "); + scanf("%d", &fromBase); + printf("请输入您预期得到数字的进制(2 to 16): "); + scanf("%d", &toBase); + + // 转换为十进制 + int numDecimal = convertToDecimal(num, fromBase); + if (numDecimal < 0) { + return 1; // 如果转换出错则直接返回 + } + + // 转换为目标进制 + convertFromDecimal(numDecimal, toBase, result); + printf("转化后的数字: %s\n", result); + + return 0; +} \ No newline at end of file diff --git a/1.exe b/1.exe new file mode 100644 index 0000000..d5ea8b0 Binary files /dev/null and b/1.exe differ