#include <stdio.h>
#include <stdlib.h>
int main()
{
char str1[100],str2[100],str3[100];
int i=0,j=0;
while(str1[i] != '\0')
{
str3[j] = str1[i];
i++;
j++;
}
while(str2[i] != '\0')
{
str3[j] = str2[i];
i++;
j++;
}
str3[j] = '\0';
printf("enter concat string:"); return 0;
}
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