C Basic programs

avg.c

#include <stdio.h>

int main()
{
    //declarar var
    int opt;
    float avg = 0;
    float total = 0;
    float num = 0;
    int count = 0;
    
    //1. initialize sentinel
    printf("Click 1 continue or 0 to stop >> ");
    scanf("%d", &opt);
    
    while (opt != 0){//2. test sentinel against condition
        
        //some code
        printf("Insert mark >> ");
        scanf("%f", &num);
        
        total = num + total;
        count++;
        
        //3. update sentinel 
        printf("Click 1 continue or 0 to stop >> ");
        scanf("%d", &opt);
    }
    
    avg = total / count;
    printf("Your avg is %f", avg);

    return 0;
}

Basic_Sum.c

//Basic sum

#include <stdio.h>

int
main ()
{

  /* variable definition: */
  int num1, num2;
  int sum;

  /* actual initialization */
  printf ("Insira o primeiro >> ");
  scanf ("%d", &num1);
  printf ("Insira o segundo >> ");
  scanf ("%d", &num2);

  //processing
  sum = num1 + num2;

  //output
  printf ("value of c : %d \n", sum);

  return 0;
}

EvenNums.c

//Números pares

#include <stdio.h>

int
main ()
{

  /* variable definition: */
  int num1, num2;
  int sum;

  /* actual initialization */
  printf ("Insira o primeiro >> ");
  scanf ("%d", &num1);
  printf ("Insira o segundo >> ");
  scanf ("%d", &num2);

  //processing
  sum = num1 + num2;
 
  if (sum % 2 == 0){
     printf ("%d é um número par", sum);
   } else{
        printf ("%d é um número impar", sum);
   }
 
  return 0;
}

PosNeg.c

//Positive or Negative

#include <stdio.h>
void main()
{
    int num;
 
    printf("Input um número >> ");
    scanf("%d", &num);
    if (num >= 0){
        printf("%d número é positivo \n", num);
    }
    else{
        printf("%d número é negativo \n", num);
    }
        
    return 0;
}

TempCheck.c

/*Temp < 0 clima gelado 
Temp 0-10 then clima muito frio
Temp 10-20 then clima frio
Temp 20-30 then clima normal
Temp 30-40 then clima quente
Temp >=40 then Its clima muito quente */

//Tem check

#include <stdio.h>
void
main ()
{
  int tmp;

  printf ("Input temp >> ");
  scanf ("%d", &tmp);
  if (tmp < 0)
    {
      printf ("Clima gelado.\n");
    }
  else if (tmp < 10)
    {
      printf ("Clima muito frio.\n");
    }
  else if (tmp < 20)
    {
      printf ("Clima frio.\n");
    }
  else if (tmp < 30)
    {
      printf ("Clima normal.\n");
    }
  else if (tmp < 40)
    {
      printf ("Clima quente.\n");
    }
  else
    {
      printf ("Clima muito quente.\n");
    }

  return 0;

}

WhileLoopBasic.c

#include <stdio.h>

int main()
{
    
    int num = 0;//1. initialize sentinel 
    
    while (num != 10){//2. test sentinel against condition
        
        //some code
        printf("%d \n", num);
        
        num = num + 1;//3. update sentinel
    }
    
    printf("done!");

    return 0;
}

WhileWithUserInput.c

#include <stdio.h>

int main()
{
    //declarar var
    int opt;
     //1. initialize sentinel
    printf("Click 1 continue or 0 to stop >> ");
    scanf("%d", &opt);
    
    while (opt != 0){//2. test sentinel against condition
        
        //some code
        printf("Let's continue...");
        
        //3. update sentinel 
        printf("Click 1 continue or 0 to stop >> ");
        scanf("%d", &opt);
    }
    
    printf("You decided to stop!");

    return 0;
}