如何用c语言完成摄氏华氏温度转换问题

#include <stdio.h>
int main()
{
    int C;
    float F;
    scanf("%d",&C);
    F = C*9.0/5+32; 
    printf("%.1f",F);
    return 0;
}

int main(){
    int C;
    scanf("%d",&C);
    float F = C*9.0/5 + 32;
    printf("F= %.1f",F);
    return 0;
}