C | main

First C program | conditions_1.c

#include <stdio.h>

int main(void)
{
    int age = 15;
    
    (age == 15) ? printf("You're 15 years old. \n") : printf("You're not 15 years old.\n");
   
      return 0;
}

/*
  print in console: You're 15 years old. 
  Program ended with exit code: 0
*/

First C program | conditions_2.c

#include <stdio.h>

int main(void)
{
    int age = 15;
    int he_is_fifteen = -1;
    
    he_is_fifteen = (age == 15) ? 1 : 0;
    
    printf("He is fifteen = %d\n" , he_is_fifteen);
   
      return 0;
}

/*
  print in console: He is fifteen = 1 
  Program ended with exit code: 0
*/

First C program | loops_1.c

#include <stdio.h>

int main(void)
{
    int i = 0;
    
    while(i < 20)
    {
        printf("All is good in the hood ! \n");
        i++; 
//++ incrementation guarantees that the loop continues the operation not undefinetly but untill it fulfill the condition.
    }
    
   
      return 0;
}
 
/*
  print in console: 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
All is good in the hood ! 
---------
* 20 times because we started from 0. 
---------
  Program ended with exit code: 0
*/

First C program | loops_2.c

#include <stdio.h>

int main(void)
{
    int i = 6;
    
    do{
// This condition guarantees we get into the loop at least once before we find out if we meet the condition or not.
        printf("Where u at? \n");
        i++;
    }
    while(i < 5);

   
      return 0;
}

/*
  print in console: Where u at? 
  Program ended with exit code: 0
*/

First C program | switch_case.c

#include <stdio.h>

int main(void)
{
    int age = 111;
    
    switch(age)
    {
        case 0:
            printf("You are 0 year old.\n");
            break;
        
        case 15:
            printf("You are 15 years old.\n");
            
        default:
            printf("You are neither 0 nor 15 years old.\n");
    }
   
      return 0;
}

/*
  print in console: You are neither 0 nor 15 years old.
  Program ended with exit code: 0
*/