c - C语言字符串在if else语句中复制

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int ticket,tnotran,tran;
char pass[40],desti[2],cla,destina[20],clana[20];
float tfare,cfare,nfare,gtnfare;
int main(int argc, char *argv[]) {

printf("\n\n\t\tTicket NO.: ");
    scanf("%d",&ticket);


while (ticket != 0){

head();
con();
system("pause");
system("cls");
netcomp();
out();
system("pause");
system("cls");
printf("\n\n\t\tTicket NO.: ");
    scanf("%d",&ticket);


}
printf("\n\n\t\tTotal No. of Transactions: %d", tran);
printf("\n\n\t\tGrand Total of Net Fare: %f", gtnfare);
}


head(){


printf("\n\t\tPassenger's Name: ");
    scanf("%s",&pass);

printf("\n\t\tDestination Code: ");
    scanf("%s",&desti);

printf("\n\t\tClass Code: ");
    scanf("%s",&cla);
}
con(){
if(strcpy(desti, "HK")||strcpy(desti, "hk")){
    tfare= 8500;
    printf("\n\t\tTicket Fare: %.2f", tfare);
    strcpy(destina,"Hong Kong");
}
else if(strcpy(desti, "BK")||strcpy(desti, "bk")){
    tfare= 7500;
    printf("\n\t\tTicket Fare: %.2f", tfare);
    strcpy(destina,"Bangkok");
}
else if(strcpy(desti, "KL")||strcpy(desti, "kl")){
    tfare= 7900;
    printf("\n\t\tTicket Fare: %.2f", tfare);
    strcpy(destina,"Kualala Lumpur");
}
else if(strcpy(desti, "TP")||strcpy(desti, "tp")){
    tfare= 8300;
    printf("\n\t\tTicket Fare: %.2f", tfare);
    strcpy(destina,"Taipe");
}
else{
    printf("\n\t\tInvalid Input");
    tfare=0;
}

if(cla== 'E'|| cla=='e'){
    cfare= 1500;
    printf("\n\t\tClass Fare: %.2f", cfare);
    strcpy(clana,"Economy");
}
else if(cla== 'T'|| cla=='t'){
    cfare= 2500;
    printf("\n\t\tClass Fare: %.2f", cfare);
    strcpy(clana,"Tourist");
}
else if(cla== 'F'|| cla=='f'){
    cfare= 3500;
    printf("\n\t\tClass Fare: %.2f", cfare);
    strcpy(clana,"First Class");
}
}
netcomp(){
    nfare = tfare+ cfare;
    gtnfare +=nfare;
    tran += 1;
}
out(){
    printf("\n\n\t\tTicket NO.: %d", ticket);
    printf("\n\t\tPassenger's Name: %s", pass);
    printf("\n\t\tDestination: %s", destina);
    printf("\n\t\tClass: %s", clana);
    printf("\n\t\tNet Fare: %f", nfare);

}

我正在创建一个程序，假设该程序是包含车费，舱位和总计的旅费。它现在运行唯一的问题是目标中的if else语句，我需要2个字符，当我输入其他目标代码（例如kl，bk或tp）时，它仅在hk中输出该语句

最佳答案

您可能想将strcpy替换为strcmp

strcpy(desti, "HK")将文本“ HK”复制到desti中，该函数将成功执行，并且由于strcpy返回指向目标的指针，因此它将是一个非零值，该值将每次执行第一个if语句。

strcpy的手册页

请注意，strcmp相等时返回0。

有关strcmp的更多信息

另请注意


您不能将strcpy(desti, "HK");转换为char desti[2]，因为您没有为空终止符分配空间。您将必须执行char desti[3]；如果您希望将其用作字符串。

关于c - C语言字符串在if else语句中复制，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/52524105/