(C syntax) the sum of numbers and syntaxes

(C syntax) the sum of numbers and syntaxes

Knowledge point:

Usage of the character function strlen ()

ASCLL code and number conversion,-48

Flexible array usage and array name usage.

Char a [100]; int I, s = 0, m; scanf ("% s", & a); m = strlen ();

 

Content: calculates the sum of all the numbers in the input integer.

Input description:

One integer in one row

Output description:

An integer

Input example:

2147483646

Output example:

45

# Include <stdio. h> # include <string. h> int main () {char a [100]; int I, s = 0, m; scanf ("% s", & a); m = strlen (); for (I = 0; I <m; I ++) {s + = a [I]-48;} printf ("% d \ n", s ); return 0 ;}

 

Number is A of some language terms () A, syntax category B, syntax Form C, syntax meaning D, lexical category E, syntax means

B. Syntax

Enter an integer in the C language program. For example, the number of digits is 3 and the number of digits is 6.

If you do not use the log function and assume that the number of indata is a non-negative integer, you can:
Int n, s;

N = 0;
S = 0;
While (indata ){
N ++;
S + = indata % 10;
Indata/= 10;
}

The number of digits is in n and in s.