C++ & C Programs with output | Free C Programs

Convert Decimal to Hexadecimal Number

2012-01-17T21:46:00.000+05:30

#include<stdio.h>

#include<conio.h>

#include<process.h>

void main()

{

Int x, y=30, z;

clrscr();

printf(“Enter the number:”);

scanf(“%d”, &x);

printf(“\n conversion of decimal to hexadecimal number\n”);

for(;;)

{

if(x= =0)

exit(1);

z=x%16;

x=x/16;

gotoxy(y--,5);

switch(z)

{

Case 10:

Printf(“A”);

Break;

Case 11:

Printf(“%c”, „B?);

Break;

Case 12:

Printf(%c”, „C”);

Break;

Case 13:

Printf(“D”);

Break;

Case 14:

Printf(“E”);

Break;

Case 15:

Printf(“F”);

Default:

Printf(“%d”, z);

}

getch();

}

Output:

Enter the number: 31

Conversion of decimal to Hexa decimal number

Mark list Analysis using Structures

2012-01-17T20:56:00.000+05:30

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

struct stud

{

int rno;

char name[15];

int marks[5];

int total;

float avg;

char class[15];

}

st[10],temp;

int i,n,j;

clrscr();

printf(“\n enter\n”);

scanf(“%d”,&n);

for(i=1;i<=n;i++)

{

printf(“\n enter the roll no..”);

scanf(“%d”,&st[i].rno);

printf(“name...\n”);

scanf(“%s”,&st[i].name);

printf(“enter three marks..”);

for(j=1;j<=3;j++)

scanf(“%d”,&st[i].marks[j]);

}

for(i=1;i<=n;i++)

{

st[i].total=0;

for(j=1;j<=3;j++)

{

st[i].total=st[i].total+st[i].marks[j];

}

st[i].avg=st[i].total/30;

if(st[i].avg>=75)

strcpy(st[i].grade,”distinction”);

elseif(st[i].avg>=60)

strcpy(st[i].grade,”first”);

elseif(st[i].avg>=50)

strcpy(st[i].grade,”second”);

else

strcpy(st[i].grade,”fail”);

}

for(i=1;i<=n;i++)

{

for(j=j+1;j<=n;j++)

{

if(st[i].total<st[j].total)

{

temp=st[i];

st[i]=st[j];

st[j]=temp;

}

printf(“\n the student details in rankwise\n”);

for(i=1;i<=n;i++)

{

printf(“\n\n roll no:%d”,st[i].rno);

printf(“\n name :%s”,st[i].name);

printf(“\n marks in three subjects”);

for(j=1;j<=3;j++)

{

printf(“\n %d,st[i].marks[j]);

}

printf (“\n total: %d”, st[i].total);

printf(“\n average:%f”,st[i].avg);

printf(“\n grade:%s”,st[i].grade);

}

getch();

}

Output:

enter

enter the roll no...105

name...sheik raja

enter the three marks...89

enter roll no...110

name...sriram

enter the three marks...98

the student details in rankwise

roll no:105

name:sheik raja

marks in three subjects

total:254

average:84.666664

grade:distinction

roll no:110

name:sriram

marks in three subjects

total:289

average:96.3333336

grade:distinction

Standard Deviation using Function

2012-01-17T20:51:00.002+05:30

#include<stdio.h>

#include<conio.h>

#include<math.h>

float mean(int a[],int n);

float std(int a[],int n,float m);

void main()

{

float m,sd;

int n,a[10],i;

clrscr();

printf(“\nenter the number of values\n”);

scanf(“%d”,&n);

printf(“\n enter the elements\n”);

for(i=0;i<n;i++)

scanf(“%d”,&n);

m=mean(a,n);

printf(“mean=%f\n”,m);

sd=std(a,n,m);

printf(“\n sd=%f”,sd);

getch();

}

flaot mean (inta[],intn)

{

float f;

int sum=0;

for(i=0;i<n;i++)

sum=sum+ a[i];

f=(float)sum/n;

return f;

}

float std(int a[],int n,float m)

{

int i;

float std,sum=0.0,d;

for(i=0;i<n;i++)

{

d=a[i]-m;

a=d*d;

sum=sum+d;

}

sd=sqrt(sum\n);

return sd;

}

Output:

enter the number of values

enter the elements

mean=6.000000

sd=2.828427

Substring Replacement

2012-01-17T20:50:00.000+05:30

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

char str[50],str1[15],str2[15],temp[50];

char *ptr;

int cnt;

clrscr();

printf(“enter a line of text..... \n”);

gets(str);

printf(“enter the string to be replaced... \n”);

gets(str1);

printf(“enter the replacing string...”);

gets(str2);

printf(“\n the replaced line of the text....”);

while(1)

{

ptr=strstr(str,str1);

if(ptr==?\o?)

break;

cnt=ptr-str;

strncpy(temp,str,cnt);

temp[cnt]=?10?;

strcat(temp,str+cnt+strlen(srt1));

strcpy(str1,temp);

puts(str);

}

getch();

}

Output:

enter the line of text... i love india

enter the string to be replaced..india

enter the replacing string...my parents

the replaced line of text

i love my parents

the Swapping of two Values using Functions

2012-01-17T20:49:00.000+05:30

#include<stdio.h>

#include<conio.h>

int swapval(int,int);

int swapref(int*,int*);

int a,b;

void main()

{

clrscr();

printf(“enter the two values\n”);

scanf(“%d%d”,&a,&b);

printf(“pass by value\n”);

printf(“before function call a=%d b=%d “,a,b);

swapval(a,b);

printf(“after function swapval a=%d b=%d “,a,b);

printf(“pass by reference\n”);

printf(“before function call a=%d b=%d “,a,b);

swapref(&a,&b);

printf(“after function swapref a=%d b=%d “,a,b);

getch();

}

swapval(int x,int y)

{

int t;

t=x;

x=y;

y=t;

printf(“\nwith swap val x=%d y=%d”,x,y);

}

swapref(int*x,int*y)

{

int *t;

*t=*x;

*x=*y;

*y=*t;

printf(“\nwith swapref x=%d y=%d “,*x,*y);

}

Output:

give two numbers

pass by value

before function call a=5 b=6

with swapval x=6 y=5

after function swapval a=5 b=6

pass by reference

before function call a=5 b=6

with swapref x=6 y=5l

after function swapref a=6 b=5

Fibonacci Series using Recursive Function

2012-01-17T20:48:00.000+05:30

#include<stdio.h>

#include<conio.h>

int fibo(int,int)

int t1,t2,t3,count;

void main()

{

printf(“enter the number of terms\n”);

scanf(“%d”,&n);

t1=0;

t2=1;

printf(“%d\t%d”,t1,t2);

count=2;

fibo(t1,t2);

getch();

}

int fibo(int t1,int t2)

{

if(count>=n)

return 0;

else

{

t3=t1+t2;

printf(“\t%d”,t3);

count++;

t1=t2;

t2=t3;

fibo(t1,t2);

}

Output:

enter the number of terms

0 1 1 2 3

Sorting Strings in Ascending Order

2012-01-17T20:47:00.000+05:30

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

int i,j,n,x;

char str[20][20],str1[20][20];

clrscr();

printf(“enter the number of strings:\n”);

scanf(“%d”,&n);

for(i=0;i<n;i++)

{

printf(“\nenter str[%d]”,i+1);

scanf(“%s”,&str[i]);

}

for(i=0;i<n;i++)

{

for(j=i+1;j<n;j++)

{

x=strcmp(str[i],str[j])

if(x>0)

{

strcpy(str[1],str[j]);

strcpy(str[j],str[i]);

strcpy(str[i],str[1]);

}

printf(“\nthe sorted strings in ascending order is\n”);

for(i=0;i<n;i++)

{

printf(“\n%s”,str[i]);

}

getch();

}

Output:

enter the number of strings:

enter str[1] raja

enter str[2] vignesh

enter str[3] adhi

the sorted strings in ascending order is

adhi

raja

vignesh