can help repair my program?

this code

#include int i,n ; float ratarata, jumlah, x; void input () { printf("Masukkan banyak data : "); scanf ("%d",&n); jumlah = 0; }

void proses(){ printf("Masukkan nilai data ke-%d: ",i); scanf("%d",n); for (i=1;i<=n;i++){ } jumlah=jumlah+x; } void output(){ ratarata=jumlah/n; printf("Ratarata: %.2f",ratarata); } int main(){ Input(); Proses(); Output(); return=1; }

thanks so much