#include#include#includeint main(void){ float a,b,f; int ctl=0,p; char Cflag='Y'; char c; char sa[10],sb,sc[10]; while((Cflag == 'Y') || (Cflag == 'y') ) {for(p=0;p#includevoid main(){ while(1) {float a=0,b=0,c=0,key;char d;printf("输入四则运算表达式:\n");scanf("%f%c%f",&a,&d,&b);switch(d){case'+': c=a+b;break;ca...
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