คำสั่ง printf   

#include<stdio.h>
main()
{

    int a,b;
    float c;
    char sex[10];
     printf("Enter No>>>");
     scanf("%d",&a);
     printf("Enter Sex>>>");
     scanf("%s",sex);
     printf("Enter Age>>>");
     scanf("%d",&b);
     printf("Enter GPA>>>");
     scanf("%f",&c);
     printf("No is :%d Sex is :%s Age is :%d GPA is :%.2f",&a,sex,&b,&c);

}

ตัวแปร

                                 ตัวแปร

#include<stdio.h>

main()

{

    int x=24;

    float y=3.61;

     printf("Welcome to 401");

     printf(" my no is x=%d and",x);

     printf(" my grade is y=%.2f",y);

     printf(" Goodbye!!!");

}

โปรแกรมแสดงข้อความออกทางหน้าจอ

#include<stdio.h>
void main()
{
    printf("    ccccc\n   ccc\n  ccc\n ccc\nccc\nccc\nccc\n ccc\n  ccc\n   ccc\n    ccccc  programming");
}