Lab Tasks 26-09-2011 (1st Lab)
Lab Tasks 03-09-2011 (2nd Lab)
Lab Tasks 10-09-2011 (3rd Lab)
Lab Tasks 17-09-2011 (4th Lab)
Monday 24 October 2011
Monday 17 October 2011
17-10-2011 (1st) Function Calls
/*Example to understand calling of
functions*/
#include<stdio.h>
#include<conio.h>
void abc();
void xyz();
void mno();
main()
{
printf("I am in main()\n");
abc();
printf("Now I am back in main()");
getche();
return 0;
}
void abc()
{
printf("Now I am in abc()\n");
xyz();
mno();
}
void xyz()
{
printf("Now I am in xyz()\n");
}
void mno()
{
printf("Now I am in mno()\n");
}
17-10-2011 Sum Using a function
/*program uses a function to add two
digits*/
#include<stdio.h>
#include<conio.h>
int sum(int,int);
main()
{
int dig1,dig2,result;
dig1 =
10;
dig2
=5;
/*calling function and storing rturned value in variable
result*/
result
= sum(dig1,dig2);
printf("%d + %d = %d",dig1,dig2,result);
getche();
return 0;
}
/*Defining functions*/
int sum(int digi1, int digi2)
{
int add;
add =
digi1 + digi2;
return add;
}
17-10-2011 Sum Using a function(function changes values before adding)
/*program uses a function to add two
digits but function changes passed values before adding them*/
#include<stdio.h>
#include<conio.h>
int sum(int,int);
main()
{
int dig1,dig2,result;
dig1 =
10;
dig2
=5;
/*calling function and storing rturned value in variable
result*/
result
= sum(dig1,dig2);
printf("%d",result);
getche();
return 0;
}
/*Defining functions*/
int sum(int digi1, int digi2)
{
digi1 =2;
digi2 =3;
int add;
add =
digi1 + digi2;
return add;
}
17-10-2011 Division Using a function
/*program uses a fubction to divide one
digit by another*/
#include<stdio.h>
#include<conio.h>
/*declaring function*/
float div(float,float);
main()
{
float dig1=0,dig2=0,result=0;
printf("Please enter a number: ");
scanf("%f",&dig1);
while(dig2 == 0)
{
printf("\n\n\nNow enter a number to
divide first digit: ");
scanf("%f",&dig2);
if(dig2==0)
{
printf("\tWarning!\nDenominator can not be zero.");
}
}
/*calling function and storing rturned value in variable
result*/
result
= div(dig1,dig2);
printf("%f / %f = %f",dig1,dig2,result);
getche();
return 0;
}
/*Defining function*/
float div(float digi1, float digi2 )
{
float opert;
opert =
digi1 / digi2;
return opert;
}
17-10-2011 Cheking of Greatest number Using a function
/* This program takes three integers
from user, calls a function to compares which one is greatest
and shows results inside that
function.*/
#include<stdio.h>
#include<conio.h>
/*declaring function*/
void check(int, int, int);
int main ()
{
/*declaring veriables*/
int num11, num22, num33;
/*prompt to take the input*/
printf("Please enter three integers, remember pressing
enter after every one: \n");
/*taking input*/
scanf("%d%d%d",&num11,&num22,&num33);
check(num11, num22,num33);
getche();
return 0;
}
/*Defining function*/
void check(int num1, int num2,int num3)
{
/*comparison and printing results*/
printf("\n\nResult: \n");
printf("___________\n\n");
if (num1 > num2 && num1 > num3)
{
printf("%d is greatest!",num1);
}
else if (num2 >
num1 && num2 > num3)
{
printf("%d is greatest!",num2);
}
else if (num3 >
num1 && num3 > num2)
{
printf("%d is greatest!",num3);
}
else if (num1 == num2
&& num1 == num3)
{
printf("All of the given digits are
equal.");
}
else
{
printf("This is some other case not
defined in the program!");
}
}
17-10-2011 Calculator (Calls Functions to Do Operations)
/* A simple calculator which calls
function to do operations*/
#include <stdio.h>
#include <conio.h>
/*declaring function*/
float add(float,float);
float sub(float,float);
float mult(float,float);
float div(float,float);
int main()
{
char exit = ' ';
do
{
float dig1 = 0 , dig2 = 0 ;
char opert;
printf("Please enter first digit:
");
scanf("%f",&dig1);
printf("\n\nNow enter operation to
perform: ");
scanf("%c",&opert);
opert=getche();
/*if operation is division then implementing
cheks and conditions to stop entering denominator as zero*/
if (opert=='/')
{
while(dig2 == 0)
{
printf("\n\n\nNow enter 2nd the digit:
");
scanf("%f",&dig2);
if(dig2==0)
{
printf("\tWarning!\nDenominator can not be zero.");
}
}
}
else
{
printf("\n\n\nNow enter 2nd the digit:
");
scanf("%f",&dig2);
}
/*Checking operation and calling function related to
operation*/
switch (opert)
{
case '+':
add(dig1,dig2);
break;
case '-':
sub(dig1,dig2);
break;
case '*':
mult(dig1,dig2);
break;
case '/':
div(dig1,dig2);
break;
default :
printf("\t\n\nWarning!\n Wrong
operation entered.");
}
exit = ' ';
/*To continue or exit*/
while(exit !='e'
&& exit != 'c' && exit !='E' && exit != 'C')
{
printf("\n\nEnter 'e' to exit or 'c' to
continue using program: ");
scanf("%c",&exit);
exit = getche();
printf("\n\n");
}
}
while (exit != 'e'
&& exit != 'E');
getche();
return 0;
}
/*Defining functions*/
/*addition function*/
float add(float digi1add, float digi2add )
{
printf("\n\n%f + %f = %f\n\n\n",digi1add,
digi2add, digi1add + digi2add);
}
/*subtraction function*/
float sub(float digi1sub, float digi2sub )
{
printf("\n\n%f - %f = %f\n\n\n",digi1sub,
digi2sub, digi1sub - digi2sub);
}
/*multiplication function*/
float mult(float digi1mul, float digi2mult )
{
printf("\n\n%f x %f = %f\n\n\n",digi1mul,
digi2mult, digi1mul * digi2mult );
}
/*division function*/
float div(float digi1div, float digi2div )
{
printf("\n\n%f / %f = %f\n\n\n",digi1div,
digi2div, digi1div / digi2div);
}
Monday 10 October 2011
10-10-2011 do-while loop (prints counting)
/* This program uses do while loop and
prints counting from 1 to 5*/
#include <stdio.h>
#include <conio.h>
int main()
{
int num = 1;
do
{
printf("%d\n",num);
num++ ;
}
while(num <=5);
getche();
return 0;
}
10-10-2011 do-while loop (even odd)
/*program uses do-while loop
and prints even numbers as they are entered but exits if an odd number is
entered.*/
#include <stdio.h>
#include <conio.h>
int main()
{
int num;
do
{
scanf("%d",&num);
if (num%2 !=1 )
printf("%d\n",num);
}
while (num %2 != 1);
getche();
return 0;
}
10-10-2011 Continue Statment
/*Just an example of continue
statmenrt.*/
#include <stdio.h>
#include <conio.h>
int main()
{
int val;
for(val = 1 ; val <=10 ; val++)
{
if (val == 3)
{
continue;
}
printf("%d ",val);
}
getche();
return 0;
}
/*Output will be the counting from 1 to
10 except 3.*/
10-10-2011 break statment
/*Just an example of break statmenrt.*/
#include <stdio.h>
#include <conio.h>
int main()
{
int val;
for(val = 1 ; val <=10 ; val++)
{
if (val == 5)
{
break;
}
printf("%d ",val);
}
getche();
return 0;
}
/*Output will be the counting from 1 to
4.*/
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