// solution for last lab
#include <stdio.h>
#include <stdlib.h>
void mystery1( char *, const char * ); // prototype
int mystery3( const char *s1, const char *s2 ); // prototype
int main()
{
char *string1;
char *string2;
int x;
// if you are using pointer then you need to assign them memory
to read user input through scanf function
string1=(char*) malloc(30);
string2=(char*) malloc(30);
// if you dont do malloc then pointer is not pointing to a valid
memory address and thus can not store it and give
// segmentation fault or bus error
printf("Enter first string: ");
scanf("%s",string1);
printf("Enter first string: ");
scanf("%s",string2);
printf("Calling mystery3 \n");
x=mystery3 (string1, string2);
if(x==0)
{
printf(" String are not equal\n");
}
else if(x==1)
{
printf(" String are equal\n");
}
printf("Calling mystery1 \n");
mystery1 (string1, string2);
printf("%s\n",string1);
return 0; // indicates successful termination
} // end main
// What does this function do?
void mystery1( char *s1, const char *s2 )
{
while ( *s1 != '\0' )
++s1;
for ( ; *s1 = *s2; s1++, s2++ ); // empty statement
} // end function mystery1
int mystery3( const char *s1, const char *s2 )
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