#include <stdio.h>
int main() { unsigned int R1; unsigned int R2; double C1; printf("R1="); scanf("%d",&R1); if (R1==0) R1=1E4; //10K printf("R2="); scanf("%d",&R2); if (R2==0) R2=2E5; //200K printf("C1(uF)="); scanf("%lf",&C1); if (C1==0.0) C1=2.2; //2.2uF printf("%d,%d,%lf\n\n",R1,R2,C1); double T=0.7*(R1+2*R2)*C1; T/=1E6; printf("T=%lfs\n",T); double f=1/T; printf("f=%lfHz\n",f); return 0; }
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