You haven't provided enough information. Probably better to learn how to measure performance and compare the two on your machine. This is a good start:
Code:
#include <stdio.h>
#include <time.h>
int main()
{
clock_t start = clock();
unsigned n;
for ( n = 1000000; --n; )
/* do something here */
printf( "time taken: %f\n", (double) (clock() - start) );
return 0;
}