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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     float x, y;
  5.     printf("请输入 x 的值：");
  6.     scanf("%f", &x);
  7.  
  8.     if (x < 1) {
  9.         y = x;
  10.     } else if (x < 10) {
  11.         y = 2 * x - 1;
  12.     } else {
  13.         y = 3 * x - 11;
  14.     }
  15.  
  16.     printf("y = %.2f\n", y);
  17.     return 0;
  18. }
Success #stdin #stdout 0.01s 5320KB
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请输入 x 的值：y = 9.00
https://ideone.com/p2BRtG
language:
C (gcc 8.3)
created:
19 days ago
visibility:
public

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