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C Program- convert a string into number

Posted Date: 10 Jun 2008 Resource Type: Articles/Knowledge Sharing Category: Computer & Technology

Posted By: Girish Patil Member Level: Diamond
Rating:

Points: 2

/*objective:
convert a string into number
*/

int convert(char *a);
void main()
{
char string[6];
int no;
clrscr();
printf("Enter a string:");
gets(string);
no=convert(string);
if(no!=-1)
{
printf("\n string %s represents no %d",string,no);
}
else
{
printf("\n string %s is invalid",string);
}
getch();
}
int convert(char *a)
{
int i;
int result=0;
for(i=0;a[i]!='\0';i++)
{
if(a[i]>='0' && a[i]<='9')
{
result=result*10+(a[i]-'0');
}
else
{
return -1;
}
}
return result;
}

Responses

Author: Lenin 10 Jun 2008

Member Level: Diamond Points : 2

hi giri are you a computer student , i know only small programs in C.But i know C is a SEA.Am i right ? I remember the days when i used to mugup the codings for Lab exams.still c fear is there.
Also still C is in flying colours

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