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/* Jyothisai_k(N190375)
Floor function & ceiling function */
#include<stdio.h>
#include<string.h>
#include<ctype.h>
char a[50];
void floor1(char[]);
void ceiling(char[]);
int neg(char[]);
int cond(char[]);
int main()
{
printf("Enter number: ");
LOOP:
scanf("%s",a);
if ( !cond(a) || !neg(a))
{
printf("Enter valid number: "); // repeated '.' and '-'
goto LOOP;
}
for(int k=0;k<strlen(a);k++)
{
if(!isdigit(a[k]) && a[k]!='.' && a[k]!='-')
{
printf("Enter valid number: "); // if entered number is of not integer type
goto LOOP;
}
}
if(a[0]!='-')
{
printf("\n floor function of %s is ",a);
floor1(a);
printf("\n ceiling function of %s is ",a);
ceiling(a);
}
else
{
printf("\n floor function of %s is ",a);
ceiling(a);
printf("\n ceiling function of %s is ",a);
floor1(a);
}
}
void floor1(char a[])
{
int i=0;
char b[50];
while(a[i]!='.' && i< strlen(a))
{
b[i]=a[i];
i++;
}
b[i]='\0';
printf("%s",b);
}
void ceiling(char a[])
{
int i=0;
char b[50];
while(a[i]!='.' && i< strlen(a))
{
b[i]=a[i];
i++;
}
if(i!=strlen(a))
{
i--;
b[i]=a[i]+1;
i++;
}
b[i]='\0';
printf("%s",b);
}
int cond(char a[])
{
int point=0;
for(int i=0;i<strlen(a);i++)
{
if(a[i]=='.')
{
point++;
if(point==2)
{
return 0;
break;
}
}
}
return 1;
}
int neg(char a[])
{
for(int i=1;i<strlen(a);i++)
{
if(a[i]=='-')
{
return 0;
break;
}
}
return 1;
}
Compiling Program...
Standard Input:
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