24.#include<iostream.h void main(){ inta[3][4]={1,2,7,8},{5,6,11,15},{9,20,3,4}}: intm=a[0][0]; for(int i=0;i<3;++) for(int j=0;j<4;j++) if(a[i]j]>m)m=a[i]j]; cout<<m<<endl; 运行结果： 25.include<iostream.h> include<string.h> void main() char *a5]=("student","worker","cadre","soldier","apen"); unsigned int n=strlen(a[O]); for(int i=1;i<5;i++){ if(strlen(a[i])>n)n=strlen(a[i]); cout<<n<<endl; } 运行结果： 26.#include<iostream.h> struct AB( char aa[15]; int bb; }； void main(){ ABa[4]={"Apple'",25},{"Peach",40},{"Pear",36},{"Tomato",62}; for(int i=0;i<4;i++) if(a[i].bb<35)cout<<a[i].aa<<’’; cout<<endl; 运行结果： 39424. :1* include<iostream. h> void mainO { int a[3J[4J = {{l, 2 ,7 ;8} ,{ ，6 11 ，20 ，3 ; int m=a[OJ[O for (int i=O;i<3;i++) for (int j=O;j<4;j++) i£<a[iJ[jJ>m) m=a[iJ[jJ; cout«m«endl; 运行结果 25. :1* include<iostream. h> :1* include<string. h> void mainO { char 铸a[5叼J={"飞'studen旧t unsigned in旧It n=st仕rlen(a[O叫J); for叫(i阳nt ρi+ { if(strlen(a[i]»n) n=strlen(a[iJ); cout«n«endl; 运行结果 26. :1* include<iostream. h> struct AB { char aa[l5J ; int bb; void main () { AB a[4J= {{"Apple" 2日，{ "Peach" , 40}, {"Pear" , 36}, {"Tomato" , 62}}; fdr (int i=O;i<4;i++) i£<a[i]. bb<35) cout«a[i]. aa«' '; cout<<endl; 运行结果: 394