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#include int main() { char c; printf("Please input a character:"); scanf("%c",&c); if(c >='A'&&c <= 'Z') c =_______________; printf("%c\n",c); return 0; }
A、c+32 B、c+48 C、C+65 D、C+97 喵查答案：c+32
#include int main() { int k; scanf("%d",&k); switch(k) { case 1: printf("%d",k++); case 2: printf("%d",k++); case 3: printf("%d",k++); break; default: printf("Full!"); } return 0; }
#include int main() { int m; printf("Input m: "); scanf("%d", &m); //输入一个整数 if (m > 0) //是否为正数 { if (m % 2 == 0) //是正数，且能被2整除，则是正偶数 { printf("%d is a positive even\n", m); } else //不能被2整除，则是正奇数 { printf("%d is a positive odd\n", m); } } _______________ //判断是否为负数 { _______________ { printf("%d is a negative even\n", m); //是负偶数 } else { printf("%d is a negative odd\n", m); //是负奇数 } } else { printf("%d is zero.It is an even\n", m); } return 0; }