C程序 #include stdio. h E我的教案面向对象程序设计课件 c\Debug\c.exe 回 lease input. the first integer: 20 bplease inpu the second integer: 25 the sum is 45 Press any key to continue scanf(%d", &b) printf( the sum is %d",a+b)3 C程序 #include "stdio.h" main() { int a,b,s; printf("please input the first integer:"); scanf("%d",&a); printf("please inpu the second integer:"); scanf("%d",&b); printf("the sum is %d",a+b); }