C语言实验1

代码1：
// 1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"

int main(int argc, char* argv[])
{   int a,b,sum;
    a = 123;
    b = 456;
    sum = a+b;
    printf("sum is %d
",sum);
    return 0;
}

代码2：
// 实验1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"

int main(int argc, char* argv[])
{   char c1,c2;
    c1=97;
    c2=98;
    printf("c1=%c,c2=%c
",c1,c2);
    printf("c1=%d,c2=%d
",c1,c2);
    return 0;
}

代码3：
// sy2.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"

int main(int argc, char* argv[])
{   char c1,c2;
    c1=197;
    c2=198;
    printf("c1=%c,c2=%c
",c1,c2);
    printf("c1=%d,c2=%d
",c1,c2);
    return 0;
}

代码4：
// sy2.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"
#include "math.h"
int main(int argc, char* argv[])
{   double x,y,z;
    scanf("%lf %lf",&x,&y);
    z=x+1/abs(y);
    printf("z=%d
",(int)z);
    printf("z=%15.6lf
",z);
    printf("z=%e
",z);
    return 0;
}