ArmStrong
# include <stdio.h>
int main(){
int no, te, r, sum=0;
printf("No :");
scanf("%d",&no);
te=no;
while(no>0){
r=no%10;
sum=sum+(r*r*r);
no=no/10;
}
if(sum==te){
printf("IT'S an Armstrong No");
}
else{
printf("IT'S NOT A Armstrong No");
}
}
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Normal Encryption Decryption
#include <stdio.h>
void main(){
char a[2]="AA";
int aa;
int conv,i;
char name[10],encr[10];
int actConv,aCode=3,uCode;
clrscr();
printf("%s",a);
printf("n%d",a[0]);
aa=a[0];
printf("%d",aa);
printf("%c",aa);
a[1]=aa;
// printf("%c n",a[1]);
//scanf("%s",name);
scanf("%[^n]",name);
for(i=0;name[i]!='0';i++){
conv=name[i];
actConv=conv+aCode;
//encr[i]=conv;
encr[i]=actConv;
// printf("%s t",conv);
// printf("%d t ",conv);
}
printf("nENCRYPTED TEXT n");
for(i=0;name[i]!='0';i++){
//printf("%s t",conv);
printf("%2c ",encr[i]);
}
a:
printf("n Give the decription KEY in NO'S :");
scanf("%d",&uCode);
if(uCode!=aCode){
printf("Oops! Key Error. n TRY AGAIN : ");
goto a;
}
printf("nDECRYPTED TEXT n");
for(i=0;name[i]!='0';i++){
//printf("%s t",conv);
conv=(encr[i])-uCode;
printf("%2c ",conv);
}
getch();
}
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Command Line Arguments
# include <stdio.h>
int main(int n,char args[]){
int i;
clrscr();
printf("HI");
printf("n Total %d arguments n ",n);
for(i=0;args[i]!=0;i++){
printf("%s n ",args[i]);
}
getch();
}
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Fibonacci
# include <stdio.h>
void main(){
int a,b,c,i;
a=1;
b=2;
c=a+b;
clrscr();
printf ("THe NACCI SEries%d , %d ",a,b);
for (i=0;i<100;i++){
printf(", %d",c);
a=b;
b=c;
c=a+b;
}
getch();
}
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Using Unary Operators
# include <stdio.h>
void main(){
int a,b,c;
clrscr();
a=1;
b=++a;
printf("n b=++a %d a=1 NOW %d",b,a);
//a--;
b=a--;
printf("n b=a-- %d a-- %d",b,a);
--a;
b++;
printf("n b++ %d --a %d a++ %d",++b,a,a++);
/* HERE the above a++ wil 1st assign 0 to a++ and now increme n
displa --a value as 1 to
*/
printf("nNEXT b++ %d --a %d a++ %d",++b,a,a++);
getch();
}
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LCM
# include <stdio.h>
void main(){
int f,s,i,add=1;
clrscr();
i=2;
f=6;
s=12;
a:
if((f%i==0)&&(s%i==0)){
// if(f%i==0){
f=(int)f/i;
s=(int)s/i;
add=add*i;
}
else if(f%i==0){
f=(int)f/i;
add=add*i;
}
else if(s%i==0) {
s=(int)s/i;
add=add*i;
}
if((f!=1)||(s!=1)){
i++;
//goto a;
}
printf("n THE LCM IS :%d ",add);
getch();
}
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LCM
# include <stdio.h>
# include <conio.h>
void main(){
int f,s,i,add=1;
clrscr();
f=6;
s=12;
i=2;
a:
if(f%i==0){
if(s%i==0){
s=(int)s/i;
}
else {
}
add=add*i;
printf("%d n",i);
printf("Total fFFF IS %d",add);
f=(int)f/i;
printf("n %d the divided value of I %d valn",f,i);
if ((f!=1)||(s!=1)){
i++;
goto a;
}
}
else{
i++;
goto a;
}
/*
i=2;
printf("n %d",i);
b:
if(s%i==0){
printf("n %d IIIII %d",i,add);
add=add*i;
printf("nnnTotal IS SSS %d",add);
s=s/i;
//printf("n %d 2 n",s);
if(s!=1){
i++;
goto b;
}
}
else{
i++;
goto b;
}
printf("The LCM is %d",add);
*/
getch();
}
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Using Malloc
# include <stdio.h>
void main(){
int *a;
int b=10,i;
;;;;;;
;
;clrscr();
// a=(int*) malloc(sizeof (int) * b);
a[0]=10;
a[1]=20;
a[100]=90;
for(i=0;i<50;i++){
printf("%4d",i+10);
a[i]=i+10;
}
printf("n");
for(i=0;i<50;i++){
printf("%4d",a[i]);
};
printf("%d",sizeof(*a));
printf("n%d",sizeof(b));
printf("n%d",a);
printf("n value %d",a[0]);
printf("n value %d",a[1]);
printf("n value %d",a[100]);
getch();
}
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Matrix
# include <stdio.h>
void main()
{
int i,j,sum=0,gT=0,mul=1,gAvg=0;
int a[3][3]={{1,2,3},{4,5,6},{7,8,9}};
int b[3][3];
clrscr();
for(i=0;i<3;i++){
for(j=0;j<3;j++){
printf("%d t",a[i][j]);
sum=sum+a[i][j];
mul=mul+a[i][j];
}
printf("t ** SUM =%d",sum);
printf("t ** AVG =%d",(sum/j));
printf("t ** mul =%d",(mul));
gT=gT+sum;
gAvg=gAvg+(sum/j);
sum=0;
printf("n");
}
printf("tt Grand Total :%d",gT);
printf("t Grand Average :%d",(gAvg/3));
// Matrix Transpose
sum=0;
gT=0;
mul=0;
printf("n t t *** Matrix Transpose *** n");
for(i=0;i<3;i++){
for(j=0;j<3;j++){
// printf("%d t",a[j][i]);
b[i][j]=a[j][i];
sum=sum+a[j][i];
mul=mul+a[i][j];
}
/*
printf("t ** SUM =%d",sum);
printf("t ** AVG =%d",(sum/j));
printf("t ** MUL =%d",mul);
*/
gT=gT+sum;
sum=0;
printf("n");
}
printf("tt Grand Total :t%d",gT);
printf("n tt ** Stored in another MATRIX **");
for(i=0;i<3;i++){
for(j=0;j<3;j++){
printf("%d t",b[i][j]);
}
printf("n");
}
for(i=0;i<3;i++){
for(j=0;j<3;j++){
printf("%d * %d = %d n",a[i][j],b[i][j],(a[i][j]*a[i][j]));
}
printf("n");
}
getch();
}
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Guess what prog is this
# include <stdio.h>
void main(){
int i,j,a[3]={7,6,5},prv=0;
clrscr();
for(i=0;i<3;i++){
printf("%3d",a[i]);
}
for(i=0;i<2;i++){
for(j=0;j<3;j++){
if(a[j]>a[(j+1)]){
printf("nn");
printf("%d ",a[j]);
prv=a[(j+1)];
a[j]=a[(j+1)];
printf("%d ",a[j]);
a[(j+1)]=prv;
}
}
}
printf("nheREn");
for(i=0;i<3;i++){
printf("%3d",a[i]);
}
getch();
}
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Using Preprocessor Directives
# include <stdio.h>
// # include "CALLH.H"
# define a 100
# define b
# define vinS ;
# define trushal ;
void main(){
#if defined b
int v;
clrscr();
v=10;
printf("nv VALUE is YO! %dn",v)vinS
#else
printf("NOT WORKNG");
#endif
printf("nn v %d n",v);
printf("(A)%d n",((a)+1));
printf("(A)%d n",(1+(a*2)));
#if defined a
printf("YO ! %d",a);
#endif
#undef a
# define a
printf("n int!: %d , %%s! :%s, int! %d, U %u"a a a a)vinS
#undef a
# define a 100
printf("n int!: %d , %%s! :%s, int! %d, U %u",a,a,a,a)vinS
printf("n t hi truS n")trushal
# if defined a
/*
int v;
v=10;
printf("nYO! %d",v);
*/
#endif
getch();
}
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PRIME
# include <stdio.h>
void main() {
int no,inc,flag,i;
clrscr();
// printf("PLZ enter a Integer No , Elso dont blame me for error,n Ur No here :");
// scanf("%d",&no);
for(no=1;no<50;no++){
flag=1;
inc=2;
for(i=2;i<no;i++){
if(no%inc==0){
flag=0;
break;
}
else {
// printf("n %d",inc);
inc++;
flag=1;
}
}
if(flag==1){
printf("tPrime No %d:",no);
}else{
printf("tNT Prime No %d:",no);
}
}
getch();
}
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Returning for Main()
# include <stdio.h>
char main(){
printf("WORKING1");
return '0';
getch();
}
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Reversing
# include <stdio.h>
void main(){
int i,n,r,t,rev=0;
clrscr();
a:
scanf("%d",&i);
n=i;
while(i>0){
t=i%10;
rev=rev*10+t;
i=i/10;
}
printf("n Reverse is %d",rev);
if(rev==n){
printf("n No is Palindrome %d :",n);
}
else{
printf("n No is Not Palindrome %d :",n);
}
rev=0;
getch();
goto a;
}
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Reverse String Palindrome
/* Reverse of string & check it for palindrome */
#include <stdio.h>
#include <conio.h>
main()
{
char s[30],s1[30];
int i,j,c,c1=0;
clrscr();
printf("n Enter the string= ");
gets(s);
for(i=0;s[i]!='0';i++);
c=0;
for(j=(i-1);j>=0;j--)
{
s1[c]=s[j];
c=c+1;
}
s1[c+1]='0';
for(i=0;s1[i]!='0';i++)
{
if(s1[i]!=s[i])
c1=1;
}
printf("n Original string= %s",s);
printf("n Reverse string= %s",s1);
if(c==1)
printf("%s is palindrome",s);
else
printf("%s is not palindrome",s);
getch();
}
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ShellSort
void main()
{
int a[20],t,i,j,n;
clrscr();
scanf("%d",&n); //N o of values to scaN;
for(i=0;i<n;i++){
scanf("%d",&a[i]);
}
for(i=0;i<n;i++){
for(j=1+1;j<n-1;j++){
if(a[i]>a[j]){
t=a[i];
a[i]=a[j];
a[j]=t;
}
}
}
printf("After Sorting Element arE");
for(i=0;i<n;i++){
printf("%5d",a[i]);
}
getch();
}
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SimpleInterest
# include <stdio.h>
void main()
{
float p, m, r, si;
clrscr();
printf("n Enter the Pr. Amount:- ");
scanf("%f",&p);
printf("n Enter the no. of months:- ");
scanf("%f",&m);
printf("n Enter the rate of interest:- ");
scanf("%f",&r);
si = (p*m*r)/100.00;
printf("n Simple Interest:- %.2f",si);
getch();
}
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String Comparision
# include <stdio.h>
void strcomp(char *f,char *s){
int flag=0;
while(*f!='0'){
if(*f!=*s){
printf("Sorry THE STRINGS R NOT EQUAL n");
flag=1;
break;
}
else{
*f++;
*s++;
}
}
if(flag==0){
printf("BOTH R SAME n");
}
else{
// printf("NOT SAME n");
}
}
void strCopy(char *f,char *s){
while(*s!='0'){
*f++=*s++;
}
}
int main() {
//char a[10],b[10];
system("clear");
char a[10]="HIDUDE";
char b[10]="BI";
strcomp(a,b);
strCopy(a,b);
printf("THE COPY PROCESS IS : %s >> %s END n ",a,b);
//system("tput");
}
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String Cpy (strcpy)
#include <stdio.h>
void strcopy(char *,char*);
main(){
char str1[20],str2[20];
clrscr();
printf("Enter 2 Strings");
scanf("%s %s",str1,str2);
printf("Strin b4 cop");
printf("Str 1 : %s t Str2 2 : %sn",str1,str2);
strcopy(str1,str2);
printf("Str aftr copy");
printf("Str 1 : %s t Str2 2 : %sn",str1,str2);
getch();
}
void strcopy(char *s,char *d){
while (*d!='0'){
*s++=*d++;
}
*s='0';
}
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Structures
#include <stdio.h>
struct Emp{
int eNo,age;
char nam[20];
}e;
struct EmpCop{
int eNo,age;
char nam[20];
}eC;
typedef struct{
int eNo,age;
char nam[20];
}Empl;
struct anot{
char name[20];
};
struct asgn{
int za;
//za=10; //U cant initialize
};
typedef struct{
int a;
union uni{
int a;
char b[5];
}un;
}stUni;
typedef union{
int a;
struct str{
int a;
char b[5];
}st;
}UniSt;
typedef struct N{
int nest;
}Na;
void main(){
struct Emp e,ex;
struct EmpCop ec;
struct N Nit,vr,*pVr;
Na aaa;
Empl e1;
Empl e2;
stUni su1;
UniSt un1;
clrscr();
vr.nest=10;
printf("THE SIZE OF STR %d N UNI IS %d n",sizeof(stUni),sizeof(su1.un));
printf("THE SIZE OF UNI %d N UNI IS %d n",sizeof(stUni),sizeof(su1.un));
e.eNo=20;
e.age=30;
strcpy(e.nam,"a");
printf("n %d %2d",e.eNo,e.age);
e1.eNo=50;
printf("n E1 %d %2d",e1.eNo,e1.age);
ex=e;
// e1=(Empl)ex;
//ec=ex;
printf("n STRUCTU COPY : %d %2d",ex.eNo,ex.age);
printf("n STRUCTU : %d %2d",e1.eNo,e1.age);
getch();
}
