c语言39题
39.编写程序，输入一个整数，统计并输出该数中数字‘2’的个数。要求定义并调用函数countdigit(number,digit)，它的功能是统计整数number 中数字digit的个数。例如countdigit(10090,0)的返回值是3。 #include<stdio.h>#include<math.h>
int countdigit(int x,int y);
intmain(void)
{
int x,c;
printf("请输入一个整数:");
scanf("%d",&x);
c=countdigit(x,2);
printf("总共有%d个\n",c);
return 0;
}
int icount;
icount = 0;
while(x%10 != 0);`
{
if(x%10==y)
{
icount += 1;
}
x=x/10;
}
return icount; C:\Users\404\Desktop\Cpp1.cpp(14) : error C2501: 'icount' : missing storage-class or type specifiers
C:\Users\404\Desktop\Cpp1.cpp(14) : error C2086: 'icount' : redefinition
C:\Users\404\Desktop\Cpp1.cpp(15) : error C2143: syntax error : missing ';' before 'while'
C:\Users\404\Desktop\Cpp1.cpp(15) : error C2018: unknown character '0x60'
C:\Users\404\Desktop\Cpp1.cpp(16) : error C2447: missing function header (old-style formal list?)
C:\Users\404\Desktop\Cpp1.cpp(23) : error C2143: syntax error : missing ';' before 'return'
Error executing cl.exe.
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