charlowercase=tolower(uppercase);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...
int main() { char lowercase = 'a';char uppercase = lowercase - 32; // 小写'a'的ASCII码是97，大写'A'的ASCII码是65，它们的差值是32 printf("小写'a'变成大写'A': %c\n", uppercase);return 0;} 就是这么简单！我们通过减去32来将小写字母"a"转换成大写字母"A"，因为它们在ASCII表中的编...
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...
First, we have been utilizing the if statement to check uppercase. If the test condition evaluates to true, the evaluated character is upper case. Whenever this if-statement is untrue, the control shifts to the else if and analyzes the else-if test condition. The evaluated letter is the lo...
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>. ...
#include<stdio.h>charto_uppercase(char c){// 如果字符是小写字母,将第5位(32)置为0,即转换为大写字母return(c&0xdf);} 首先,我们知道大写字母的ASCII码值范围是65到90,而小写字母的ASCII码值范围是97到122。它们之间的差值恰好是32。 在ASCII码中,将小写字母转换为大写字母,实际上就是将对应字符的第...
setiosflags(ios::uppercase) 16进制数大写输出 setiosflags(ios::lowercase) 16进制小写输出 setiosflags(ios::showpoint) 强制显示小数点 setiosflags(ios::showpos) 强制显示符号 View Code 可以不使用#include<iomanip>的 cout.precision()设置小数点后精确度, ...
#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;} 运行结果如下: ...
#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;} ...
Here is the program to convert a string to uppercase in C language, Example Live Demo #include <stdio.h> #include <string.h> int main() { char s[100]; int i; printf("\nEnter a string : "); gets(s); for (i = 0; s[i]!='\0'; i++) { if(s[i] >= 'a' && s[i...