Thread: plz help me find out where i hv gone wrong wid dis c program on operstions on strings

Code:

#include<stdio.h>
#include<string.h>
#include<ctype.h>
#include<conio.h>








void main()
{int ch;
printf("1.Calculate the length of string\n2.Compare 2 strings\n3.Concatenate 2 strings\n4.Copy a string to another\n5.Change the string case\n6.Sentence case\n");
scanf("%d",&ch);
switch(ch)
{
case 1:
        {       char s[20];


         printf("Enter the string the length of which is to be calculated:\n");
         gets(s);
        int len=strlen(s);
        printf("The length of the string %s is: %d",s,len);
         }
         break;
case 2:
        { char x[20],y[20];
        printf("Enter the 2 strings to be compared:\n");
        gets(x);
        printf("\n");
        gets(y);
        printf("\n");
        if(strcmp(x,y)==0)
        printf("The 2 strings %s and %s are the same\n",x,y);
        else
        printf("The 2 strings %s and %s are not the same",x,y);
        }break;
case 3:
        {
        char x[30],y[10];
        printf("Enter the 2 strings to be concatenated:\n");
        printf("x=");gets(x);printf("\ny=");
        gets(y);
        strcat(x,y);
        printf("\n After concatenation the two strings are x=%s and %s",x,y);
        }break;
case 4:
        {
        char s[20],copy[20];
        printf("Enter the string to be copied into another string:\n");
        gets(s);
        strcpy(copy,s);
        printf("The copied string is:%s",copy);
        }break;
case 5 :
     {
        int c; char s[20];
      printf("Enter the string");
      gets(s);
      int len=strlen(s);
      printf("\nTo what case would you like the string to be converted?\n1.Upper\n2.Lower\n");
      scanf("%d",&c);
      switch(c)
      {
      case 1:
      {
      for(int i=0;i<len;i++)
      s[i]=toupper(s[i]);
      printf("The converted string is:\n");
      puts(s);
      }
      break;
      case 2:
      {
      for(int i=0;i<len;i++)
      s[i]=tolower(s[i]);
      printf("The converted string is:\n");
      puts(s);
      }
      }
      }break;
case 6:
      {       char s[30];
      printf("\nEnter the sentence");
      gets(s);
      int len=strlen(s);
      s[0]=toupper(s[0]);
      for(int i=0;i<len;i++)
      {
      if(s[i]==' ')
      {
      s[i+1]=toupper(s[i+1]);
      }
      }
      printf("The converted string is:\n");
      puts(s);
      }


      }
      getch();
      }

here gets() is nt working!! :'-(

ok..bt wat changes shud i mk to my source code?? ...i m jst abeginnr in programing...so dnt knw much...i tried replacing void main by int main...bt evn dat dint help..nd if i use scanf() in place f gets().the program is working bt my equiremnt of enterin a string including spaces is not met...so plz suggest changes...

FAQ > Get a line of text from the user/keyboard (C) - Cprogramming.com

It's generally a good idea to actually read the links people recommend to you.

Bye, Andreas

after going through all the above mentioned links..these were the changes that i had made in my program
1.replaced void by int
2.tried replacing gets() by fgets and scanf("%[^\n]s",name) but still my problem is the same
the detailed version of my problem is:
when i run the cases under switch individually on a separate window,i face no problem and i am getting a perfect output
but when i am running the above code,i am not being asked to enter the string..for instance under case 1 of string operations,i am getting that the length f the string is 0; in short,the compiler is not executing gets() or the other input functions when under switch case....

also if i use scanf("%s",name),the program output is perfect but only i am not able to enter a sentence..

ohkay..il do that now..