program to get sum of 1,2,3,4,5,.............100 using function

using codeblock
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//program get sum of  1,2,3,4,5,.............100 using function
#include<stdio.h>                      //header file
void sum_series();                          // function prototype/declaration with return type zero.
int main()                              //main function
{
sum_series();                                     // function calling.
return 0;                                       //returns 0 value
}
void sum_series()                              // function body line ; also called function definition
{
int sum=0;           //initialization of sum to zero
 int i;                    // variable declaration 
for(i=1;i<=100;i++)       //loop running from 1 to 100 with increment 1 each time
{
    sum=sum+i;           // summing all the numbers repetitively
}
printf("sum=%d\n",sum);      //output
}


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using turboc++
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//program get sum of  1,2,3,4,5,.............100 using function
#include<stdio.h>                      //header file
#include<conio.h>
void sum_series();                          // function prototype/declaration with return type zero.
void main()                              //main function
{
sum_series();                                     // function calling.
getch();                                       //returns 0 value
}
void sum_series()                              // function body line ; also called function definition
{
int sum=0;           //initialization of sum to zero
 int i;                    // variable declaration 
for(i=1;i<=100;i++)       //loop running from 1 to 100 with increment 1 each time
{
    sum=sum+i;           // summing all the numbers repetitively
}
printf("sum=%d\n",sum);      //output
}

/* here we have used top down approach. i.e calling from top and writing its body line down.
 we can also reverse the process.*/

program to generate series 1,2,3,4,5,.............100 using function

using codeblock
----------------------------------------------------------------------------------------
// to generate 1,2,3,4,5,....100 series using function.
#include<stdio.h>                      //header file
void series();                          // function prototype/declaration with return type zero.
int main()                              //main function
{
series();                                     // function calling.
return 0;                                       //returns 0 value
}
void series()                              // function body line ; also called function definition
{
 int i;                    // variable declaration
for(i=1;i<=100;i++)       //loop running from 1 to 100 with increment 1 each time
{
    printf("%d\n",i);      //output
}
}

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using turboc++
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// to generate 1,2,3,4,5,....100 series using function.
#include<stdio.h>                      //header file
#include<conio.h>
void series();                          // function prototype/declaration with return type zero.
void main()                              //main function
{
series();                                     // function calling.
getch();                                       //holds the output
}
void series()                              // function body line ; also called function definition
{
 int i;                    // variable declaration
for(i=1;i<=100;i++)       //loop running from 1 to 100 with increment 1 each time
{
    printf("%d\n",i);      //output
}
}

/* here we have used top down approach. i.e calling from top and writing its body line down.
 we can also reverse the process.*/

program to know a number is positive or negative or zero using function.

using codeblock
---------------------------------


//program to know a number is positive or negative or zero using function.
#include<stdio.h>                      //header file
void number();                          // function prototype/declaration with return type zero.
int main()                              //main function
{
number();                                     // function calling.
return 0;                                       //returns 0 value
}
void number()                              // function body line ; also called function definition
{
 int number;                    // variable declaration 
printf("enter number\n");           // displays message to input data
scanf("%d",&number);        // gets data from user.
if(number>0)                     //condition testing
{
printf("%d is positive\n",number);    // displays output
}

else if(number<0)                     //second condition testing
{
   printf("%d is negative\n",number); 
}
else                                   // if none of above condition satisfy
{
    printf("%d is zero\n",number);      //output
}
}


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using turboc++
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//program to know a number is positive or negative or zero using function.
#include<stdio.h>                      //header file
#include<conio.h>
void number();                          // function prototype/declaration with return type zero.
void main()                              //main function
{
number();                                     // function calling.
getch();                                       //holds the output
}
void number()                              // function body line ; also called function definition
{
 int number;                    // variable declaration 
printf("enter number\n");           // displays message to input data
scanf("%d",&number);        // gets data from user.
if(number>0)                     //condition testing
{
printf("%d is positive\n",number);    // displays output
}

else if(number<0)                     //second condition testing
{
   printf("%d is negative\n",number); 
}
else                                   // if none of above condition satisfy
{
    printf("%d is zero\n",number);      //output
}
}