啊哈C语言-练习代码

#include 
#include 
int main()
{
    int a,b,c,t;
    scanf("%d %d %d",&a,&b,&c);
    
    if(ac) t=c;
    
    printf("%d",t);
    
    system("pause");
    return 0;
}

#include 
#include 
int main()
{
    char a;
    scanf("%c",&a);
    printf("后面一个字符是%c",a+1);
    return 0;
}

#include 
#include 
int main()
{
   int a,b,c;
   scanf("%d %d",&a,&b);
   c=a+b;
   printf ("%d+%d=%d\n",a,b,c);
   c=a-b;
   printf ("%d-%d=%d\n",a,b,c);
   c=a*b;
   printf ("%d*%d=%d\n",a,b,c);
   c=a/b;
   printf ("%d/%d=%d\n",a,b,c);
   system("pause");
    return 0;
}

#include 
#include 
int main()
{
    system("color f2");
    printf ("     *       \n     **       \n*    ***      \n**   ****     \n**************\n**    ****    \n*    ***     \n     **       \n     *        \n");
    system("pause");
    return 0;
}