#include<stdio.h>
main()
{
    int fa, mo ;
    float A, B, C;
    char pe, op, ch;
    printf("input mo and fa:\n");
    scanf(" %d,%d", &mo, &fa);
    printf("you are men ? T OR F  :\n");
    scanf("%c", &op);
    switch (op)
    {
    case 'T':
        A = (mo + fa)*0.54;
        break;
    case'F':
        A = (fa*0.923) + mo;
        break;
    }
    printf("是否喜爱运动y  or  n:\n");
        scanf("%c", &pe);
    switch (pe)
    {
    case'y':
        B = A*0.02;
        break;
    case'n':
        B = A;
        break;
    default:
        printf("inour error");
    }
    printf("是否健康饮食Y  or N:");
    scanf("%c", &ch);
    switch (ch)
    {
    case'Y':
        C = B*0.015;
        printf("%d", C);
        break;
    case'N':
        C = B;
        printf("%d", C);
        break;
    }

}

[此贴子已经被作者于2015-10-25 11:46编辑过]

#include<stdio.h>          //函数具体作用你百度查一下吧
main()
{
    int fa, mo ;
    float A, B, C;
    char pe, op, ch;
    printf("input mo and fa:\n");
    scanf(" %d,%d", &mo, &fa);
    printf("you are men ? T OR F  :\n");
    fflush(stdin);                      //这里
    scanf("%c", &op);
    switch (op)
    {
    case 'T':
        A = (mo + fa)*0.54;
        break;
    case'F':
        A = (fa*0.923) + mo;
        break;
    }
    printf("是否喜爱运动y  or  n:\n");
    fflush(stdin);                       //这里
        scanf("%c", &pe);
    switch (pe)
    {
    case'y':
        B = A*0.02;
        break;
    case'n':
        B = A;
        break;
    default:
        printf("inour error");
    }
    printf("是否健康饮食Y  or N:");
    fflush(stdin);                      //这里
    scanf("%c", &ch);
    switch (ch)
    {
    case'Y':
        C = B*0.015;
        printf("%d", C);
        break;
    case'N':
        C = B;
        printf("%d", C);
        break;
    }

}

谢谢你！！