Created
December 11, 2012 23:30
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| int square(int x){ | |
| return x * x; | |
| } | |
| int *map(int array[], int size, int (*f)(int)){ | |
| int i; | |
| int *out = calloc(size, sizeof(int)); | |
| for(i=0; i<size; i++){ | |
| // In this example I'm using map to give back an array of | |
| // the values squared. therefore you could view (f)(array[i]) | |
| // as (squared)(array[i]) or squared(array[i]) | |
| out[i] = (f)(array[i]); | |
| } | |
| return out; | |
| } | |
| int main() { | |
| int array[3] = {1, 2, 3}; | |
| int array_size = sizeof(array)/sizeof(int); | |
| int *mapped_array = map(array, array_size, square); | |
| int i; | |
| for(i=0; i<array_size; i++){ | |
| printf("%d = %d\n", i, mapped_array[i]); | |
| } | |
| // Because I've allocated some memory for the mapped array I must free it. | |
| free(mapped_array); | |
| return 0; | |
| } |
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