10th program

Objective

Study the function of String.

Theory

“A string is a contiguous sequence of symbols or values, such as a character string (a sequence of characters) or a binary digit string (a sequence of binary values).”

Strings are the form of data used in programming languages for storing and manipulating text String is generally understood as a data type storing a sequence of data values, usually bytes, in which elements stand for characters. A variable declared to have a string data type usually causes storage to be allocated in memory that is capable of holding some predetermined number of symbols.


Task

Write a program that inputs a character as lower case covert it into uppercase and vice versa.

Coding:
#include<stdio.h>
#include<string.h>
void main(void)
{
char st[20];
int i;
printf("Enter string\n");
scanf("%s",st);
for(i=0;i<=strlen(st);i++)
{ if(st[i]>=65&&st[i]<=90)
st[i]=st[i]+32; }
printf("\nString in uppercase to lowercase is\n %s",st);
}