hello,

i have tried compiling and running this code but how do i input a numeric value like 30 or 35? this is recursive fibonacci and all i need to do is check the output after program has finished execution. any suggestions would be of tremendous help. i just need to know how to enter a value.

i want to enter a number, let the program run because all i require is to check how much time it took the program to complete the calculation.Code:#include <stdio.h> #include <stdlib.h> #include <time.h> #include <string.h> __int64 fibRecursive(int n) { if (n <= 0) return 0; if (n == 1) return 1; return fibRecursive(n - 1) + fibRecursive(n - 2); } __int64 fibIteration(int n) { __int64 ret = 0; int i,j, iter; i=0; j=1; if( n < 2) return n; for(iter=2; iter<=n; iter++) { ret=i+j; i=j; j=ret; } return ret; } int main(int argc, char* argv[]) { __int64 val; int n; time_t t1, t2; if(argc != 3) { printf("Usage %s iteration or recursive number\n", argv[0]); _exit(1); } n = atoi(argv[2]); t1 = time(NULL); if(strcmp(argv[1], "iteration") == 0) { val = fibIteration(n); } else if(strcmp(argv[1], "recursive") == 0) { val = fibRecursive(n); } t2= time(NULL); printf("n=%d, Val = %I64u, time spent is =%d\n", n, val, t2 - t1); return 0; }