<<코딩내용 C로 작성>>
~~~ c++

#include
#include

int testcase,len,p,q,a,b,time;
char str[1000]="";

int main(){
scanf_s("%d", &testcase);

while(testcase){
    len=0;
    time=0;
    p,q,a,b=0;
    int i=0;

    scanf_s("%d", &len);
    scanf_s("%s", str, len+1);
    scanf_s("%d %d", &p, &q);

    if(p<q){
        a=p, b=q;
    }
    else{
        a=q, b=p;
    }

    i=0;

    while(i <= len-i-1) {

        if(str[i]=='?' && str[len-i-1]=='?'){
            if(len-i-1 != i)
                time += 2*a;
            else
                time+=a;
        }

        else if(str[i]=='?'&& str[len-i-1]=='a')
            time+=a;
        else if(str[i]=='?'&& str[len-i-1]=='b')
            time+=b;
        else if(str[i]=='a' && str[len-i-1]=='?')
            time += a;
        else if(str[i]=='b'&& str[len-i-1]=='?')
            time+=b;

        i++;
    }

    printf("%d\n", time);
    testcase--;
}

return 0;

}

<<컴파일오류>>

submission.cpp:8:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &testcase);
^
submission.cpp:16:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &len);
^
submission.cpp:17:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", str);

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