C Language -- Function

# Import
 
  
# Import "MyFunction. h "# import" Operator. h "# define PI 3.1415926int mediumValue (int o, int p, int q) {# pragma mark ------------- summarize several methods for finding the number of intermediate numbers // sum the three numbers, minus the largest, minimum // array sorting // first method // calculate the maximum first, then the minimum, and finally the int max = 0, min = 0, med = 0; if (o> p & o> q) {max = o;} else if (p> o & p> q) {max = p ;} else {max = q;} if (o
  
   
P & o
   
    
Q) {med = o;} else if (p> o & p
    
     
Q) {med = p;} else {med = q;} return med;} // No return value. No parameter void printfLanou (void); void printfLanou (void) {printf ("blue ou") ;}// no return value. The parameter void printfNum (int number); void printfNum (int number) {printf ("% d ", number);} // There is a returned value, no parameter // float PI () // {// return 3.1415; //} // There is a returned value, there are also parameters // int square (int x) // {// return x * x; //} // sum int sumsValue (int m, int n ); int sumsValue (int m, int n) {int sums = 0; for (int I = m; I <= n; I ++) {Sums = sums + I;} return sums;} int main (int argc, const char * argv []) {// int B [10] = {0}; // for (int I = 0; I <10; I ++) {// B [I] = arc4random () % (20-10 + 1) + 10; //} // for (int j = 0; j <10; j ++) {// printf ("% d", B [j]); // int c [5] = {0 }; // for (int I = 0; I <5; I ++) {// c [I] = arc4random () % (60-20 + 1) + 20; //} // printf ("\ n"); // for (int I = 0; I <5; I ++) {// printf ("% d ", c [I]); // printfLanou ();// PrintfNum (5); // printf ("% f", PI () + 3); // printf ("% d", square (5 )); // printf ("% d", sumsValue (); // int a [5] = {, 9}; // bubbleSort (, 5); # pragma mark -------- summarize the array functions // array as the parameter, passing in the array name, that is, the first address of the array // once the array is created, there will be a fixed address, you cannot operate the entire array. You can only operate on an element in the array. // functions can be nested and called, but cannot be nested. // 1. write the int sumValeu (int n) function. Calculate the sum of 1 to n. // int a = 0; // a = sumValue (101); // printf ("% d ", a); // 2. write the function dayOfYear (Year, month, day) // printf ("\ n"); // dayOf Year (2014, 1, 13); // 3. write a function and return the intermediate number of three integers // int mediu = mediumValue (2, 3, 1); // printf ("mediu = % d", mediu); // 4, compile a function and return the number of numbers in positive integer n. // method-// numbers (345); // method 2 (while LOOP) // 5. create? Right? Module: operator. h operator. m // implement the function to add, subtract, multiply, and divide two integer values. // Add (1, 2); // subtract // multiply // except // 6. Calculate s = (2*2 )! + (3*3 )! + (4*4 )! // 1. What is the sum of integer values? // 2 ,? Integer factorial // 3. What is the sum of three integers? Of the factorial and // square (2); // printf ("square % d", square (2 )); // factorial (square (2); // printf ("factorial % d", factorial (square (2 ))); // sum // int s = 0; // first // s = sum (factorial (square (2), factorial (square (3 )), factorial (square (4); // second // for (int I = 2; I <= 4; I ++) {// s = s + factorial (square (I); //} // s = factorial (5); // printf ("\ n "); // printf ("s = % d", s); # pragma mark -------- summary static // same function type, same return value, same number of parameters // (post-runtime, during compilation) // all variables defined in the function are local variables // without static modification, the runtime is placed in the stack area, and the destroy is used up // static modification is available, the compilation phase is already in the static zone, which occupies a lot of memory and can only be initialized once // The function modified with static is used, you can only use the // NTFS plug-in // for (int I = 0; I <10; I ++) {// test () in this file (); //} return 0 ;}
    
   
  
 

"Operator.h"

// Add void add (int a, int B); // subtract void reduce (int a, int B); // multiply void multiply (int a, int B ); // except void divide (int a, int B); void test ();

"Operator.m"

// Add void add (int a, int B) {printf ("% d", a + B);} // subtract void reduce (int a, int B) {printf ("% d", a-B);} // multiply void multiply (int a, int B) {printf ("% d", a * B );} // except void divide (int a, int B) {printf ("% d", a/B) ;}# pragma mark ------- static keyword void test () {// static int I = 10; int I = 10; printf ("% d", ++ I );}
MyFunction.h
Int sumValue (int n); void dayOfYear (int year, int month, int day); int mediumValue (int o, int p, int q); // Bubble sorting, arr is the array to be sorted, and count is the number of arrays void bubbleSort (int arr [], int count ); // help me write a random number function // The number of digits in positive integer n void numbers (int n); // square int square (int x ); // factorial int factorial (int n); // sum int sum (int a, int B, int c );
MyFunction.m
Int sumValue (int n) {int sum = 0; for (int I = 1; I
  
   
2) {days = days + 1 ;}}days = days + day; printf ("day % d", days) ;}// Bubble sorting, arr is the array to be sorted, and count is the number of arrays void bubbleSort (int arr [], int count) {for (int I = 0; I
   
    
Arr [j + 1]) {int temp = arr [j]; arr [j] = arr [j + 1]; arr [j + 1] = temp ;}}} printf ("\ n"); for (int I = 0; I