printf("%c 转为小写是：%c\n",uppercase,lowercase);return0;} 🌠 toupper toupper函数是C标准库中用于将字母从小写转换为大写的函数。 C 复制代码 9 1 inttoupper(intc);和tolower函数一样:● 参数c类型为int,需要转换的字符可以隐式转换为unsigned char ● 返回值类型为int,返回转换后的大写字符或...
To transform uppercase characters into lowercase characters, we can use the tolower() method. If the tolower() method is called with a parameter that is not an uppercase character, it provides the same text that was supplied to it. It is declared in the library <ctype.h>. In C langua...
int main() { char uppercase = 'D'; char lowercase = toLowerCase(uppercase); printf("转换前:%c,转换后:%c\n", uppercase, lowercase); return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 这里的toLowerCase函数通过比较字符是否是大写字母,然后通过ASCII码的运...
toupper函数和tolower函数的参数和返回值类型是完全相同的: int tolower(int c); int toupper(int c); 两者都以int类型作为参数和返回值,目的是为了能处理任何可能的字符值。 代码语言:javascript 复制 #include<stdio.h>#include<ctype.h>intmain(){char lowercase='a';char uppercase=toupper(lowercase);prin...
When we convert the capital letters or strings into lowercase using the ASCII codes, the process converts the uppercase to the lowercase letters in C programming. The ASCII value of the uppercase letter (A -Z) is ranging from 65 to 90, and the ASCII value of the lowercase letter (a -...
原型:int toupper(int ch); 参数:ch - 需要转换的字符。 返回值:如果参数是小写字母,则返回其对应的大写字母;否则,返回参数本身。 示例 #include <stdio.h> #include <ctype.h> int main() { char ch = 'a'; printf("Original: %c, Uppercase: %c\n", ch, toupper(ch)); return 0; }发布...
ANSI 3.1.2 Whether case distinctions are significantMicrosoft C treats identifiers within a compilation unit as case sensitive.The Microsoft linker is case sensitive. You must specify all identifiers consistently according to case.See AlsoConceptsBehavior...
百度试题 结果1 题目下面哪个方法可以用于将字符串转换为大写? A. toLowerCase() B. toUpperCase() C. upperCase() D. lowerCase() 相关知识点: 试题来源: 解析 B. toUpperCase() 反馈 收藏
inttolower(int c) 示例代码: 代码语言:javascript 复制 #include<stdio.h>#include<ctype.h>intmain(){char ch='a';printf("Original character: %c\n",ch);char upper=toupper(ch);printf("Uppercase: %c\n",upper);char lower=tolower(ch);printf("Lowercase: %c\n",lower);return0;} ...
int tolower ( int c ) 示例代码: #include <stdio.h>#include <ctype.h>int main(){char ch = 'a';printf("Original character: %c\n", ch);char upper = toupper(ch);printf("Uppercase: %c\n", upper);char lower = tolower(ch);printf("Lowercase: %c\n", lower);return 0;} ...