String concatenation in c without using strcat Function

String concatenation in c without using strcat Function 

void stringConcat(char[],char[]); 
int main()
{
char strl[100],str2[100]; 
int compare;
printf("\nEnter first string: \n"); 
scanf("%s",strl);
printf("\nEnter second string: "); 
scanf("%s",str2);

stringConcat(strl,str2);
printf("\nString after concatenation: %s",strl);
return 0; 
}


void  stringConcat(char   strl[],char   str2[])
{ 
int   i=0,j=0;
while(strl[i]!='\0')
{
i++; 
}
while(str2[j] ! = '\0') 
{
strl[i] = str2[j] ;
i++;
j++;
}

strl[i] = ' \0';
}