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#include <stdio.h>
#include <stdlib.h>
int doub(int);
int trip(int);
int half(int);
void fpv_exec(int (**fpv)(int), int n);
int doub(int i) {
return i * 2;
}
int trip(int i) {
return i * 3;
}
int half(int i) {
return i / 2;
}
void fpv_exec(int (**fpv)(int), int n) {
int i;
for (i = 0; *(fpv + i) != NULL; i++) {
printf("%d\n", (*(fpv + i))(n));
}
}
int main(int argc, char **argv) {
int (**fpv)(int);
fpv = calloc(4, sizeof(int (*)(int)));
fpv[0] = doub;
fpv[1] = trip;
fpv[2] = half;
fpv[3] = NULL;
for (argv++, argc--; argc; argv++, argc--) {
fpv_exec(fpv, atoi(*argv));
}
exit(EXIT_SUCCESS);
}
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