这种题目相对简单，用C语言实现很好理解。
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//用C语言实现：判断一个程序是否为小写字母，如果是，就转换成大写字母，否则，不转换#include<iostream>using namespace std;int main(void) {char c;cout << "请输入一个字符: " << endl;cin >> c;if (c >= 'a' && c <= 'z') { //判断是否为小写字母，。，，，利用ASCLL码表c = c - 32; //转换成大写}else if (c >= 'A' && c <= 'Z') { //判断是否为大写字母c = c + 32; //转换成小写}cout << c << endl;system("pause");return 0;}
用go语言实现的两种方法
package mainimport("fmt")func main(){var x stringfmt.Println("请输入字符：")fmt.Scanln(&x)t:= snfn(x)fmt.Println(t)}func snfn(x string)string{c := rune(x[0])c -= 32return string(c)}
package mainimport "fmt"func main(){for {var x stringfmt.Println("请输入一个字符:")fmt.Scanln(&x)t := converSion(x)fmt.Println(t)}}func converSion(a string) string {var ay = []string{"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"}var ay2 = []string{"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"}for k, v := range ay{if v == a{a = ay2[k]}}return a}//还可以使用strings包中的//strings.ToLower()//strings.ToTitle()
