c语言scanf("%d%c%d%c",&a,&b,&c,&d")；中文的标点符号错误，switch前缺‘；’，怎么改？

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123456789101112131415161718192021#include <<a href="http://www.baidu./s?wd=stdio.h&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvrjT4uH0YuHu-njwhmW9b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EnHnsPjcsnW6zPWczrjD4n104rf" target="_blank" class="baidu-highlight">stdio.h</a>>int main(){    printf("wlee to simple caculater!\nattention please:\ninput form:a+b=\n");    double a,c,e;    char b,d;    do{        scanf("%d%c%d%c",&a,&b,&c,&d)；    // 该语句最后的分号不是英文分号        switch(b)        {            case'+':e=a+c;break;            case'*':e=a*c;break;            case'-':e=a-c;break;            case'/':e=a/c;break;            default:printf("please input your right equation\n");}        printf("%g%c%g=%d\npress Q to quit,or c to continue",a,b,c,e);        d=getchar();    }while(d='c');    printf("thanks for your using");    return 0;}

 ；和 ; 是有区别的