INTERVIEW QUESTIONS C STRINGS IN C DETAILS

Question: Why doesn’t strcat (string, ‘!’); work ?

Answer:

Source: CoolInterview.com

'!' represents a char and not a string.
strcat (string, "!"); should work. Source: CoolInterview.com

strcat() will works for strings but not for characters Source: CoolInterview.com

string(string,"?!?")
string must be an array of charecters. Source: CoolInterview.com

It works. Check out this code

int main()
{
char arr[10]="ABC";

printf("%s
",strcat(arr,"a"));

return 0;
}
Source: CoolInterview.com

It actually works...
#include<stdio.h>
#include<string.h>
void main()
{
printf(strcat("Hello","!");
}
Run d above code n see in d output window...U'l get output as
Hello! Source: CoolInterview.com

strcat concatenate the two string.

strcat(string,"!"); will work because ! is enclosed within double quotes and it is considered as string.

strcat(string,'!'); will not work because ! is enclosed within the single quotes,it is considered as character. Source: CoolInterview.com

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