运输公司对用户计算运输费用。路程(s/km)越远, 每吨·千米运费越低。标准如下。
路程 | 折扣 |
---|---|
s<250 | 没有折扣 |
250≤s<500 | 2%折扣 |
500≤s<1000 | 5%折扣 |
1000≤s<2000 | 8%折扣 |
2000≤s<3000 | 10%折扣 |
3000≤s | 15%折扣 |
设每吨每千米货物的基本运费为P, 货物重为W, 距离为S, 折扣为D, 则总运费F的计算公式为F = P × W × S × (1 – D)。
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#include <stdio.h>
int main() { int c, S; float P, W, D, F; printf("Please enter Basic Freight(P) ,Cargo Weight(W) and Distance(S): P= ,W= ,S= \n"); scanf("P=%f,W=%f,S=%d", &P, &W, &S); if(S >= 3000) { D = 0.15; } else { c = S / 250; switch(c) { case 0: D = 0; break; case 1: D = 0.02; break; case 2: case 3: D = 0.05; break; case 4: case 5: case 6: case 7: D = 0.08; break; case 8: case 9: case 10: case 11: D = 0.10; break; case 12: D = 0.15; break; } } F = P * W * S * (1 – D); printf("The total freight is: %8.2f\n", F); return 0; } |