= 0) { sum += num % 10; num /= 10; } return sum;}int main() { int num; printf("请输入一个整数: "); scanf("%d", &num); printf("数字之和为: %d\n", sumOfDigits(num)); return 0;} 7) 数字反转 #include <stdio.h>int rever...
1. Write a function num_digits_in_base which takes an decimal integers x and b. The function returns the numberof digits required to represent the decimal integer x in base-b notation. For example: The decimal value 18 in base10 requires 2 digits. When represented in base 2, 18 is ...
int dec_pl, sign, ndigits = 3; /* Keep 3 digits of precision. * / str = fcvt(num, ndigits, &dec-pl, &sign); /* Convert the float to a string. * / printf("Original number; %f\n" , num) ; /* Print the original floating-point value. * / printf ("Converted string; %s\...
*/#include<stdio.h>#include<stdarg.h>#defineuint8_t unsigned char#defineuint16_t unsigned short#defineuint32_t unsigned intintMax(int,int);//函数声明intmain(void){int(*p_Max)(int,int);//定义一个函数指针inta, b, c; p_Max = &Max;//把函数Max赋给指针变量p, 使p指向Max函数printf("...
int main() { printf("The maximum value of float = %.10e\n", FLT_MAX); printf("The minimum value of float = %.10e\n", FLT_MIN); printf("The number of digits in the number = %.10e\n", FLT_MANT_DIG); } 让我们编译和运行上面的程序,这将产生下列结果: ...
except that E, rather than e, introduces the exponent (where appropriate).n Pointer to integer Number of characters successfully written so far to the stream or buffer; this value is stored in the integer whose address is given as the argument.p Pointer to void Prints the address...
Reverse Digits of Number in C Code #include<stdio.h> #include<conio.h> void main() { int num,rev=0,dig; clrscr(); //accept the number to be reversed printf(“Enter number:\t”); scanf(“%d”,&num); while(num>0) { dig=num%10; ...
and dd are one or more digits for the exponent. The precision specifies the number of digits after the point.nPointer to integerNumber of characters successfully written so far to the stream or buffer; this value is stored in the integer whose address is given as the argument. S...
int number = (int)(Math.random() * 10); 1. 通过将该值乘以10,可能值的范围变为0.0 <= number < 10.0。 使用数学。当您需要生成一个随机数时,random可以很好地工作。如果需要生成一系列随机数,应该创建java.util.Random的实例。随机调用该对象上的方法来生成数字。如果并发场景下需要生成随机数的实例则需...
digits = fingers + TOES; 将被转换成错误的语句: digits = fingers +=20; 4.3.1:const限定符 C90标准新增了const关键字,用于限定一个变量为只读。其声明如下: const int MONTHS =12;//MONTHS在程序中不可更改,值为12 这使得MONTHS成为一个只读值。也就是说,可以在计算中使用MONTHS,可以打印MONTHS,...