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#include
   
    #define Mile_to_meter 1609 //1英里 = 1690米#define Foot_to_centimeter 30.48 //1英里 = 1690米#define Inch_to_centimeter 2.54 //1英里 = 1690米int main(){    float mile, foot, inch;    scanf("%f%f%f", &mile, &foot, &inch);    printf("%fmiles = %f meters\n", mile, mile * Mile_to_meter);    printf("%ffeet = %f centimeters\n", foot, foot * Foot_to_centimeter );    printf("%finches = %f centimeters\n", inch, inch * Inch_to_centimeter );    return 0;}
   

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