Question

The program needs to be written in C.

Write a function void camelCase(char* word) where word consists of more than two words separated by underscore such as “random_word” or "hello_world_my_name_is_sam". camelCase() should remove underscores from the sentence and rewrite in lower camel case” (https:// en.wikipedia.org/wiki/Camel_case). Watch out for the end of the string, which is denoted by ‘\0’. You have to ensure that legal strings are given to the camelCase() function.

The program should only run when the input is lowercase letters and underscores. If the user inputs any capital letters or symbols other than '_' the program should return "The input was invalid" and exit.

NOTE: You can use the toUpperCase(...) a function provided in the skeletal code to change the case of a character from lowercase to upper case . Notice that toUpperCase() assumes that the character is currently in lower case. Therefore, you would have to check the case of a character before calling toUpperCase().

Here's the skeletal code:

#include <stdio.h>
#include <stdlib.h>

/*converts ch to upper case, assuming it is in lower case currently*/
char toUpperCase(char ch){
return ch-'a'+'A';
}

void camelCase(char* word){
/*Convert to camelCase*/
}

int main(){
/*Read the string from the keyboard */
  
/*Call camelCase*/
  
/*Print the new the string */
  
return 0;
}

Example:
If you typed in "hello_world_my_name_is_sam" the output should be "helloWorldMyNameIsSam" and exit the program.
And if you typed in "hello_WORLD_my_NAME_is_sam" the output should be "The input was invalid" and exit the program.

Answer 1

Please find the code below:

#include <stdio.h>

#include <stdlib.h>

/*converts ch to upper case, assuming it is in lower case currently*/

char toUpperCase(char ch){

return ch-'a'+'A';

}

void camelCase(char* word){

/*Convert to camelCase*/

int i=0;

//loop through the string

while(word[i]!='\0'){

//if underscore is there

if(word[i]=='_'){

int j=i+1;

//upper case next character

word[j] = toUpperCase(word[j]);

//shift content to left by one

while(word[j]!='\0'){

word[j-1]=word[j];

j++;

}

word[j-1]='\0';

}

i++;

}

}

int main(){

/*Read the string from the keyboard */

char input[100];

printf("Enter the message : ");

scanf("%s",input);

int i=0;

int valid=1;

//check if valid string or not

while(input[i]!='\0'){

if((input[i]<'a' || input[i]>'z' ) && input[i]!='_' ){

valid = 0;

break;

}

i++;

}

//if not valid show error

if(valid==0){

printf("The input was invalid");

}else{

//else call the methods

/*Call camelCase*/

camelCase(input);

  

/*Print the new the string */

printf("%s",input);

}

  

  

return 0;

}

output:

CAUsers Mohammad Shahrukh\Desktoplc_language_workspacelCPP lowe to camelo Enter the message: hello_world_my_name_is_sam helloworldMyNameIsSam Process exited after 5.078 seconds with return value 0 Press any key to continue

CAUsers Mohammad Shahrukh\Desktoplc_language_workspacelCPPlowe to camelo Enter the message: hello_WORLD_my_NAME_is_sam The input was invalid Process exited after 2.264 seconds with return value 0 Press any key to continue Oj