C - Basic Syntax

Basic Code With Keywords **// 
"Declare variables" 
int age;
printf("Hello, World! \n")
printf("Hello, World! \n"); return 0;/* my first program in C */ 
fruit = apples + oranges; // get the total fruit
 #include <stdio.h> #include  
<float.h> int main() 
{ printf("Storage size for float : %d \n", 
 sizeof(float)); 
 printf("Minimum float positive value: %E\n", FLT_MIN ); 
 printf("Maximum float positive value: %E\n", FLT_MAX ); 
 printf("Precision value: %d\n", 
FLT_DIG ); return 0; }
extern int d = 3, f = 5; // declaration of d and f.
 int d = 3, f = 5; // definition and initializing d and f.
 byte z = 22; // definition and initializes z.
 char x = 'x'; // the variable x has the value 'x'.
#include <stdio.h> // Variable declaration: 
 extern int a, b; extern int c; extern float f; int main () { /* variable definition: */ 
 int a, b; int c; float f; /* actual initialization */ 
 a = 10; b = 20; c = a + b; 
printf("value of c : %d \n", c); 
 f = 70.0/3.0; 
 printf("value of f : %f \n", f);
  return 0; }
// function declaration
  int func(); int main()  
{ // function call int i = func(); } 
 // function definition int func() 
 { return 0; }
 int g = 20; // valid statement 10 = 20; //
invalid statement; would generate compile-time error
 #include <stdio.h>
  #define LENGTH 10  
#define WIDTH 5 
 #define NEWLINE '\n' 
 int main()  
{ int area; 
 area = LENGTH * WIDTH; 
 printf("value of area : %d", area); 
 printf("%c", NEWLINE); 
 return 0; }
 #include <stdio.h>  
int main() 
{ const int LENGTH = 10;  
const int WIDTH = 5;  
const char NEWLINE = '\n'; 
 int area; area = LENGTH * WIDTH; 
 printf("value of area : %d", area); 
 printf("%c", NEWLINE);
  return 0; }

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