C File =>
/* Write a menu driven program to perform the following operations on using standard library functions:
1. Convert string to uppercase
2. Copy one string to another
3. Compare two strings
4. Concatenate two strings */
<stdio.h>
<string.h>
<stdlib.h>
<ctype.h>
int main()
{
char s1[50],s2[50];
int ch,i;
printf("\nMenu :\n 1.Convert string to uppercase\n");
printf(" 2. Copy one string to another\n");
printf("3. Compare two strings\n 4. Concatenate two strings\n");
printf("5. Exit\n Enter your choice : ");
scanf("%d",&ch);
switch(ch)
{
case 1: printf("\n Enter String: ");
scanf("%s",s1);
printf("\n Converted String: ");
for(i=0;i<strlen(s1);i++)
printf("%c",toupper(s1[i]));
break;
case 2: printf("\n Enter String: ");
scanf("%s",s1);
strcpy(s2,s1);
printf("\n Copied String is : %s",s2);
break;
case 3: printf("\n Enter string1 : ");
scanf("%s",s1);
printf("\n Enter String2 : ");
scanf("%s",s2);
if(strcmp(s1,s2)==0)
printf("\n Entered strings are equal...");
else
printf("\n Entered strings are different..");
break;
case 4: printf("\n Enter string1 : ");
scanf("%s",s1);
printf("\n Enter string2 : ");
scanf("%s",s2);
printf("\n Concatenated string : %s",strcat(s1,s2));
break;
case 5: exit(0);
break;
default: printf("\n Enter proper choice");
} //end switch
return 0;
}
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