Upon successful completion, tolower() returns the lowercase letter corresponding to the argument passed; otherwise returns the argument unchanged. Example: How tolower() function works? #include <stdio.h> #include <ctype.h> int main() { char ch; printf("Convert upper case to lower case:\n"...
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...
Sample Output: Input a string: w3resource Select an option: 1. Convert to uppercase 2. Convert to lowercase 1 Uppercase string: W3RESOURCE --- Input a string: JavaScript Select an option: 1. Convert to uppercase 2. Convert to lowercase 2 Lowercase string: javascript Explanation: In the a...
#include <stdio.h>char to_uppercase(char c) { if (c >= 'a' && c <= 'z') { // 如果是小写字母,则将ASCII码值减去32转换为大写字母 return c - 32; } else { return c; }}char to_lowercase(char c) { if (c >= 'A' && c <= 'Z') { // 如果是大写字母,则将ASCII码值加...
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码的运算得到对应的小写字母。 4. 实际应用 ...
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;} ...
In addition to this, the scanf() method is also being called to read the entered string. Further, for loop is utilized to convert the entered string which has all uppercase characters to lowercase characters. We first set the variable ‘j’ within the loop. Within the for loop, we employ...
C program – Conversion of a String from lowercase to uppercase /* C Program to convert Lower case * String to Upper case. * Written by: Chaitanya */#include<stdio.h>#include<string.h>intmain(){charstr[25];inti;printf("Enter the string:");scanf("%s",str);for(i=0;i<=strlen(str...
include <hidef.h> include "derivative.h"char upper2lower(char ch){ return ch|=0x20;} void main(){ char ptr[11]="Fun Course";char outstr[11];int i;for(i=0;ptr[i];i++){ outstr[i]=upper2lower(ptr[i]);} outstr[i]='\0';printf("%s\n",outstr);} ...
Example C program to convert lower case into upper case and vice versa:Below C program is used to convert lower case into upper case. strupr() function