若函数体中没有returen语句则函数返回类型为void举两个例子:1.int fun(int a,int b){int c;c=a+b;return(c); //有return就不用void了}main(){int x=3,x=4;z=fun(x,y);printf("%d",z);}2.void fun(int a,int b)
//有void不要写return{ int c; c=a+b; printf("%d",c);}main(){ int x=3,x=4; fun(x,y);}其结果:c=7
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