How to use sscanf

#include<stdio.h>
int main()
{
char s[]="123 45.32 4";
int x;
double y;
int c;
puts(s);
sscanf(s,"%d%lf%d",&x,&y,&c);
printf("%d\n%lf\n%d\n",x,y,c);
}

How to use sprintf

#include<stdio.h>
int main ()
{ int x;
  char s[80];
  double y;
  printf("ENTER\n");
  scanf("%d%lf",&x,&y);
  sprintf(s,"integer:%6d\ndouble:%.2f\n",x,y);
  puts(s);
}

How to get string input way2

#include<stdio.h>
int main ()
{ int i=0;
  char c;   
  char a[80];
  printf("ENTER\n");
  while ((c=getchar())!='\n') {a[i++]=c;}
  a[i]='\0';
  puts(a); 
}

How to get a string input way1

#include<stdio.h>
int main()
{
char s[50];
printf("enter\n");
fgets(s,50,stdin);
printf("%s",s);
}

How to use strtol

#include<stdio.h>
#include<stdlib.h>
int main () {
const char *string="21.3% are good" ;
long d;
char *stringptr;
d=strtol(string,&stringptr,0);
printf("%s\n%ld\n%s\n",string,d,stringptr);
}

How to use strod

#include<stdio.h>
#include<stdlib.h>
int main () {
const char *string="21.3% are good" ;
double d;
char *stringptr;
d=strtod(string,&stringptr);
printf("%s\n%.2f\n%s\n",string,d,stringptr);
}

How to use atol

#include<stdio.h>
#include<stdlib.h>
int main() {
long i;
char s[20]={"23.56 this is"};
i=atol(s);
printf("%ld\n",i);
}