This document contains 14 programs demonstrating various string manipulation functions in C programming such as printf, gets, strlen, strcpy, strncpy, strcmp, strupr, strcat, strrev. Each program is accompanied by its output. The programs are organized by Vinay Arora of Thapar University to teach students how to use basic string handling functions in C.

1. C Programming - Strings
Organized By: Vinay Arora
Assistant Professor, CSED
Thapar University, Patiala

2. Program - 1
#include<stdio.h>
#include<conio.h>
void main()
{
char a[]="CIVIL DEPARTMENT";
int i=0;
clrscr();
for(i=0;i<=15;i++)
{
printf("%c",a[i]);
}
getch();
}
Vinay Arora
CSED

3. Program – 1 (output)
Vinay Arora
CSED

4. Program - 2
#include<stdio.h>
#include<conio.h>
void main()
{
char a[30]="CIVIL DEPARTMENT";
int i=0;
clrscr();
while(a[i]!='0')
{
printf("%c",a[i]);
i++;
}
getch();
}
Vinay Arora
CSED

5. Program – 2 (output)
Vinay Arora
CSED

6. Program - 3
#include<stdio.h>
#include<conio.h>
void main()
{
char a[]="CIVIL DEPARTMENT";
clrscr();
printf("%s",a);
getch();
}
Vinay Arora
CSED

7. Program – 3 (output)
Vinay Arora
CSED

8. Program - 4
#include<stdio.h>
#include<conio.h>
void main()
{
char a1[]={'C','I','V','I','L'};
char a2[]={'C','I','V','I','L','0'};
char a3[6]={'C','I','V','I','L'};
clrscr();
printf("n%s",a1);
printf("n%s",a2);
printf("n%s",a3);
getch();
}
Vinay Arora
CSED

9. Program – 4 (output)
Vinay Arora
CSED

10. Program - 5
#include<stdio.h>
#include<conio.h>
void main()
{
char a1[6]={'C','I','V','I','L'};
clrscr();
printf("n%s",a1);
printf("n%.3s",a1);
printf("n%-6.2s",a1);
printf("n%6.2s",a1);
printf("n%10s",a1);
printf("n%5s",a1);
getch();
}
Vinay Arora
CSED

11. Program – 5 (output)
Vinay Arora
CSED

12. Program - 6
#include<stdio.h>
#include<conio.h>
void main()
{
char text[20];
int length;
clrscr();
printf("Type the Text belown");
gets(text);
length=strlen(text);
printf("Length of string = %d",length);
getch();
}
Vinay Arora
CSED

13. Program – 6 (output)
Vinay Arora
CSED

14. Program - 7
#include<stdio.h>
#include<conio.h> getch();
void main()
{ }
char str1[20], str2[20];
int length;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("Enter 2nd stringn");
gets(str2);
printf("n1st String is --->t%s",str1);
printf("n2nd String is --->t%s",str2);
strcpy(str1,str2);
printf("nn1st String after strcpy() is --->t%s",str1);
Vinay Arora
CSED

15. Program – 7 (output)
Vinay Arora
CSED

16. Program - 8
#include<stdio.h>
#include<conio.h> getch();
void main()
{ }
char str1[20], str2[20];
int length;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("Enter 2nd stringn");
gets(str2);
printf("n1st String is --->t%s",str1);
printf("n2nd String is --->t%s",str2);
strncpy(str1,str2,2);
printf("nn1st String after strcpy() is --->t%s",str1);
Vinay Arora
CSED

17. Program – 8 (output)
Vinay Arora
CSED

18. Program - 9
#include<stdio.h>
#include<conio.h> getch();
void main()
{ }
char str1[20], str2[20];
int result;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("Enter 2nd stringn");
gets(str2);
printf("n1st String is --->t%s",str1);
printf("n2nd String is --->t%s",str2);
result=strcmp(str1,str2);
//In case of match result will be ZERO otherwise NON ZERO
printf("nnResult after Comparing is %d",result);
Vinay Arora
CSED

19. Program – 9 (output)
Vinay Arora
CSED

20. Program – 9 (output)
Vinay Arora
CSED

21. Program - 10
#include<stdio.h>
#include<conio.h>
void main()
{
char str1[20];
int length;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("n1st String is --->t%s",str1);
strupr(str1);
printf("nnString after strupr() is --->t%s",str1);
getch();
}
Vinay Arora
CSED

22. Program – 10 (output)
Vinay Arora
CSED

23. Program - 11
#include<stdio.h>
#include<conio.h> getch();
void main()
{ }
char str1[20],str2[20];
int length;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("Enter 2nd stringn");
gets(str2);
printf("n1st String is --->t%s",str1);
printf("n2nd String is --->t%s",str2);
strcat(str1,str2);
printf("nnString after strcat() is --->t%s",str1);
Vinay Arora
CSED

24. Program – 11 (output)
Vinay Arora
CSED

25. Program - 12
#include<stdio.h>
#include<conio.h> getch();
void main()
{ }
char str1[20],str2[20];
int length;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("Enter 2nd stringn");
gets(str2);
printf("n1st String is --->t%s",str1);
printf("n2nd String is --->t%s",str2);
strcat(str1," ");
strcat(str1,str2);
printf("nnString after strcat() is --->t%s",str1);
Vinay Arora
CSED

26. Program – 12 (output)
Vinay Arora
CSED

27. Program - 13
#include<stdio.h>
#include<conio.h>
void main()
{
char str1[20];
int length;
clrscr();
printf("Enter 1st stringn");
gets(str1);
printf("n1st String is --->t%s",str1);
strrev(str1);
printf("nnString after strrev() is --->t%s",str1);
getch();
}
Vinay Arora
CSED

28. Program – 13 (output)
Vinay Arora
CSED

29. Program - 14
#include<stdio.h> printf("n1st String is --->t%s",str1);
#include<conio.h>
void main() strrev(str1);
{
char c,str1[30]; printf("nnString after strrev() is --->t%s",str1);
int length,i=0;
clrscr(); getch();
}
printf("Enter 1st stringn");
c=getchar();
while(c!='@')
{
str1[i]=c;
i++;
c=getchar();
}
Vinay Arora
CSED

30. Program – 14 (output)
Vinay Arora
CSED

31. Thnx…
Vinay Arora
CSED