Thread: memory violation

Why does this code give memory violation?

#include <stdio.h>

int main(void)
{
char string[80];
char substring[80];
char temp[256];
//int pos = 0;

temp[0] = '\0';

int loc, i, j;

printf("Enter string: ");
scanf("%s",&string);

printf("Enter substring: ");
scanf("%s",&substring);

printf("Enter position: ");
scanf("%d",&loc);

j=0;

for(i=0; i < loc-1; i++)
temp[j++] = string[i];

for(i=0; substring[i] != '\0'; i++)
temp[j++] = substring[i];

for(i=loc-1; string[i] != '\0'; i++)
temp[j++] = string[i];

temp[j] = '\0';

printf("%s",temp);

return 0;
}