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| #include <stdio.h>
#include <tgmath.h>
#include <string.h>
double sin(double), cos(double), exp(double), log(double);
struct {
char *nom;
double (*fon)(double);
} table[] = {
"sin", sin,
"cos", cos,
"exp", exp,
"log", log };
#define NBF (sizeof table / sizeof table[0])
int main(int argc, char **argv)
{
char nom[100];
double nb = 0;
int i = 0;
while(1)
{
scanf("%s", nom);
if(strcmp(nom, "fin") == 0) return 1;
scanf("%lf", &nb);
for(i = 0; i < NBF && strcmp(table[i].nom, nom) != 0; i++);
if(i < NBF) printf("%f\n", (*table[i].fon)(nb));
else printf("%s ? \n", nom);
}
return 0;
} |
