Experiment 1.

#include <stdio.h> 
int main() {
    int x;
    the printf ( " Enter an integer; \ n- " );
    scanf("%d",&x);
    if(x%2==1)
       the printf ( " odd " );
     the else  
       the printf ( " even number " );
     return  0 ;
}

 

 

 

 

 

 

 

#include <stdio.h>
int main(){
    int days;
    the printf ( " Enter an integer: \ n- " );
    scanf("%d",&days);
    if(days<=5&&days>=1)
       printf("workdays,fighting\n");
    else if(days==6||7)
       printf("weekend,relax~\n");
    else
       printf("Ooops,not in 1~7\n");
    return 0;
}

 

 

 

 

 

 

#include <stdio.h>
int main () {
	char ch;
	printf ( "Enter a character: \ n");
	scanf("%c",&ch);
	if(ch<='z'&&ch>='a',ch=ch-32)
	printf("%c\n",ch);
	return 0;
}

 

 

 

 

 

#include <stdio.h> 
int main(){
    printf("Hello,Mars!");
    return 0;
}

 

 

 

 

 

#include <stdio.h>
int product(int,int);
int main(void)
{
    int x,y,s;
    scanf("%d %d",&x,&y);
    s = product(x,y);
    printf("The mul is:%d",s);
    return 0;
}
int product(int a,int b)
{
    int many;
    mul=a*b;
    return mul;
}