Notes

Sum and avg
#include <stdio.h>
int main()
{
int a[50],sum=0,i,n;
float avg;
printf("enter the number of elements in the array:");
scanf("%d",&n);
printf("enter the elements:n");
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
for(i=0;i<n;i++)
{
sum=sum+a[i];
}
avg=sum/n;
printf("sum is %dn",sum);
printf("average is %fn",avg);
return (0);
}

LINEAR SEARCH
#include <stdio.h>
void main()
{
int i,num, search, found = 0, a[15];
printf("Enter the number of elements: ");
scanf("%d", &num);
printf("Enter the elements n");
for (i = 0; i < num; i++)
{
scanf("%d", &a[i]);
}
printf("Enter the element to be searched ");
scanf("%d", &search);
for (i = 0; i < num ; i++)
{
if (search == a[i] )
{
found = 1;
break;
}
}
if (found == 1)
printf("Element is present in the array at position %d",i+1);
else
printf("Element is not present in the arrayn");
}


STRING COMPARISON
#include <stdio.h>
#include<string.h>
int main()
{
char str1[20];
char str2[20];
int value;
printf("Enter the first string : ");
scanf("%s",str1);
printf("Enter the second string : ");
scanf("%s",str2);
value=strcmp(str1,str2);
if(value==0)
printf("strings are same");
else
printf("strings are not same");
return 0;
}

NUMBER PALINDROME

#include <stdio.h>
int main()
{
int r,n,sum=0,temp;
printf("enter the number =");
scanf("%d",&n);
temp=n;
while(n>0)
{
r=n%10;
sum=(sum*10)+r;
n=n/10;
}
if(temp==sum)
printf("palindrome number");
else
printf("not palindrome");
return 0;
}
STRING PALINDROME WITHOUT STRING
#include<stdio.h>
int main()
{
char string[40];
int length=0, flag=1,i;
printf("Enter string:n");
scanf("%s",string);
for(i=0;string[i]!='';i++)
{
length++;
}
for(i=0;i<length/2;i++)
{
if( string[i] != string[length-1-i] )
{
flag=0;
break;
}
}
if(flag==1)
{
printf("PALINDROME");
}
else
{
printf("NOT PALINDROME");
}
return 0;
}

STRING CONCATENATION WITH OUT STRING FUNC

#include <stdio.h>
int main()
{
char str1[50], str2[50], i, j;
printf("nEnter first string: ");
scanf("%s",str1);
printf("nEnter second string: ");
scanf("%s",str2);
for(i=0; str1[i]!=''; i++);
for(j=0; str2[j]!=''; j++, i++)
{
str1[i]=str2[j];
}
str1[i]='';
printf("n Concatenated String is: %s",str1);
return 0;
}