Answer Posted / fathimath fahima j

free :
#include <cstdlib>
Void free (void *ptr);

Free() function returns the memory
Pointed to by ptr to the heap. 

Realloc :
#include<cstdlib>
Void *realloc(void *ptr,size_t size);

The realloc function changes the size of
the previously allocated memory pointed to by ptr to dat specified by size.

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#include #include #include #include void select(char *items, int count); int main(void) { char s[255]; printf("Enter a string:"); gets(s); select(s, strlen(s)); printf("The sorted string is: %s.\n", s); getch(); return 0; } void select(char *items, int count) { register int a, b, c; int exchange; char t; for(a = 0; a < count-1; ++a) { exchange = 0; c = a; t = items[ a ]; for(b = a + 1; b < count; ++b) { if(items[ b ] < t) { c = b; t = items[ b ]; exchange = 1; } } if(exchange) { items[ c ] = items[ a ]; items[ a ] = t; } } } design an algorithm for Selection Sort

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