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"...
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 -...
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...
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...
("1. Convert to uppercase\n");printf("2. Convert to lowercase\n");intoption;scanf("%d",&option);switch(option){case1:modify_string(str,toupper);printf("Uppercase string: %s",str);break;case2:modify_string(str,tolower);printf("Lowercase string: %s",str);break;default:printf("...
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...
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;} ...
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);} ...
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...
Check if the characters are uppercase letters Int isxdigit (int c) Check if the character is a sixteen digit numeric character Int toupper (int c)Convert lowercase letters to uppercase letters Int tolower (int c) Convert uppercase letters to lowercase letters ...