解答一下错误
/*用下面的scanf函数输入数据a=3,b=7,x=8.5,y=71.82,c1=A,c2=a.问在键盘上应该如何输入数据？将答案截图上传
#include<stdio.h>
int main()
{int a,b;
float x,y;
char c1,c2;
scanf("a=%d b=%d",&a,&b);
scanf("%f %e",&x,&y);
scanf("%c%c",&c1,&c2);
printf("a=%d,b=%d,x=%f,y=%f,c1=%c,c2=%c\n",a,b,x,y,c1,c2);
return 0;
}
*/
#include<stdio.h>
int main()
{int a,b;
float x,y;
char c1,c2;
a = 3;
b = 7;
x = 8.5;
y = 71.82;
c1 = A;
c2 = a;
scanf("a=%d b=%d",&a,&b);
scanf("%f %e",&x,&y);
scanf("%c%c",&c1,&c2);
printf("a=%d,b=%d,x=%f,y=%f,c1=%c,c2=%c\n",a,b,x,y,c1,c2);
return 0;
}
这个错误有点懵 'A' was not declared in this scope 应该是c1 =‘A’; 用下面的scanf函数输入数据a=3,b=7,x=8.5,y=71.82,c1=A,c2=a.问在键盘上应该如何输入数据
1、你这 A 变量都没有声明，你引用当然报错,
2、c1 = A ,c2 = a ，说明这两个都是字符，字符的赋值要用单引号，不然可能会与变量名冲突
c1 = 'A';
c2 = 'a';
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