/*this is first c program*/ # 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 mul; mul=a*b; return mul; } #include <stdio.h> int main() { int a=5,b=7,c=100,d,e,f; d=a/b*c; e=a*c/b; f=c/b*a; printf("d=%d,e=%e,f=%d\n",d,e,f); return 0; } #include<stdio.h> int main() { int a=5,b=8; printf("a++=%d\n",a++); printf("a=%d\n",a); printf("++b=%d\n,++b"); printf("b=%d\n",b); return 0; } #include<stdio.h> int main() { int a=5 ,b=8,c=8; printf("%d,%d,%d,%d\n",a==b&&a==c,a!=b&&a!=c,a>=c,a<=b&&a<=c); printf("%d,%d\n",a<=b||a>=c,a==b||b==c); printf("%D,%d,%d,%d\n",!(a==b),!(a>=c),!(a<=b)); return 0; } #include<stdio.h> int main () { int x; printf("输入一个整数\n"); scanf("%d",&x); if(x%2==0) printf("是偶数\n"); else printf("是奇数\n"); return 0 ; } #include<stdio.h> int main(){ char ch; printf("输入一个字符:\n"); scanf("%c",&ch); if(ch<='z'&&ch>='a') printf("%c-->%c",ch,ch-32) ; else printf("%c不是小写字母\n",ch); }
实验1c语言开发环境使用和数据类型,运算符和表达式
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