lab5.h:94:30: error: empty character constant while(full_name[i]!= ')

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Need help with this error in C++

this is my code and error in the end :

 

lab5.h:94:30: error: empty character
constant
while(full_name [i]!= '')
Transcribed Image Text:lab5.h:94:30: error: empty character constant while(full_name [i]!= '')
std::string extractLastName (std::string full_name, std::string email){
int i = 0;
while(i<full_name.length()){
while(full_name [i]!='')
i++;
i++;
int j=i;
int k-1;
while(j<full_name.length() && k<email.length()){
char c1=full_name[j];
char c2=email[k];
if(c1>='A' && c1<='z')
c1 +=32;
if(c2>='A' && c2<='z')
c1 +=32;
if(c1!=c2)
break;
j++;
k++;
}
if(j== full.name.length())
return full_name.substr(i);
}
return "";
}
Transcribed Image Text:std::string extractLastName (std::string full_name, std::string email){ int i = 0; while(i<full_name.length()){ while(full_name [i]!='') i++; i++; int j=i; int k-1; while(j<full_name.length() && k<email.length()){ char c1=full_name[j]; char c2=email[k]; if(c1>='A' && c1<='z') c1 +=32; if(c2>='A' && c2<='z') c1 +=32; if(c1!=c2) break; j++; k++; } if(j== full.name.length()) return full_name.substr(i); } return ""; }
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