求大神分析，請問哪里有毛病啊

#include <stdio.h>

int suanfa(int l,int f,int s)

{

? ? int m,sum;

? ? m=2.3;

? ? if(l<=3&&s<=23,s>5)

? ? sum==14;

? ? else?

? ? sum*=1.2;

? ? if(l>3&&s<=23,s>5)

? ? sum==14+(l-3)*m;

? ? else

? ? sum*=1.5;

? ? return (sum);

}

int main()

{

? ? int l=12;

? ? int s=6;

? ? int suanfa;

? ??

? ? printf("%d\n",sum);

? ? return 0;

}

慕移動7068701

2019-05-09

源自：C語言入門 5-14

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挫胖子
2019-05-20

#include?<stdio.h>
float?cost(float?distances,?int?times)
{
????float?money;????
????if?(distances?<=?3)????
????{
????????return?14;????
????}????
????else?if?(times?<?5?||?times?>=?23)????
????{????
???????money?=?1.2*(ceil(distances)?-?3)*2.3?+?14;????
????}????
????else????
????{????
????????money?=?(ceil(distances)?-?3)*2.3?+?14;
????}???
????return?money;
}

int?main()
{????
????printf("打車總費用：%0.1f",?cost(12,?9)?+?cost(12,?18));????
????system("pause");????
????return?0;
?}

給你對比下，你錯的較多，樓上已經(jīng)為你指出很多，我就不多說，哪里不懂再問。