#include
void fun(char string1[],char string2[],char string[])
{
int i,j;
for(i = 0;string1[i] != '\0';i++)
{
string[i]=string1[i];
}
for(j = 0;string2[j] != '\0';j++)
{
string[i+j]=string2[j];
}
string[i+j] = '\0';
}
int main ()
{
void fun(char string1[],char string2[],char string[]);
char s1[100];
char s2[100];
char s[100];
printf("intput string1:");
scanf("%s",s1);
printf("intput string2:");
scanf("%s",s2);
fun(s1,s2,s);
printf("\nThe new string:%s\n",s);
return 0;
}