运行结果 include <stdio. h> int main(void) input X 2.5 double x, y; f(2.50)=04 printf( Enter x: In) scanf( %f , &x) input X if(x=0 y=1 X else f(0.00)=0.0 printf( f(%.2f)=%.1fn",x, y) return 0:运行结果 #include <stdio.h> int main(void) { double x, y; printf("Enter x:\n"); scanf("%lf", &x); if(x != 0) y = 1/x; else y = 0; printf("f(%.2f) = %.1f\n", x, y); return 0; } input x: 2.5 f(2.50)=0.4 input x: 0 f(0.00)=0.0